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RM2AWX3TK–A text-book of physiology, for medical students and physicians . rift, 1903, 1904. 492 CIRCULATION OF BLOOD AND LYMPH. pressures, and the same is true, of course, of arterial and capillarypressures, there must be some agreement as to what constitutesthe heart-level, since the highest and lowest points of the heartwhen the individual is standing or sitting may differ by as muchas 15 centimeters, von Recklinghausen proposes the levelmade by a dorsoventral line drawn from the bottom of thesternum (costal angle) to the spinal column. This authorf hasdevised a simple apparatus for determining venou
RMW1WG69–Archive image from page 894 of Denkschriften der Medicinisch-Naturwissenschaftlichen Gesellschaft zu. Denkschriften der Medicinisch-Naturwissenschaftlichen Gesellschaft zu Jena denkschriftender62medi Year: 1879 ''â //' Vaq l/'ii Flip. 71 Das Centralnervensystem der Monotremcn und Marsupialier. gen der vorzugsweise Kreuzungsfasern, aber auch einzelne kleine, dorsoventral absteigend, Bündelchen enthält alsdann einen zweiten mittleren, kreuzungsärmeren und daher auf der Figur heller erscheinenden Abschnitt (â ) und endlich einen dritten ventralen Abschnitt, welcher neben Kreuzungsfasern zahlr
RMPG0PYY–. A manual of zoology. Zoology. 2S2 CCELHELMIXTHES A third character is the marked dorsoventral flattening of the body (except in Ichthyobdellid;e and a few other forms), tlie animals thus re- calling lire Ihitworms. Tliis may be the result of llie very slight develop- ment of the ctTelom. In most leeches there is a body parenchyma, traversed bv muscles in which the organs are immediately im- bedded (fig. 20g). The alimentary tract bears paired diverticula (lig. 270), varying in number in different species. Between the last and largest pair of tliese is the intestine, wliich opens dorsal to th
RMMCTMFR–. Fig. 6. Eumoiphometra aurora, a, cirrus, b, proximal part of a ray. c, fourth to tenth brachials and Pa. d, Pg from the side. All x 13. a slight angle with the dorsoventral axis but the distal half bends sharply outwards. The costals are not quite so long as the radials; they are widely separated from each other and are not deeply incised by the axillaries. The axillaries are slightly longer than broad. The first and second brachials are of the shape shown in Fig. 6b the former are widely separated. The distal edges of the radials, costals, axillaries and the first and second brachials are
RM2AWJ058–A text-book of physiology for medical students and physicians . ement as to what constitutesthe heart-level, since the highest and lowest points of the heartwhen the individual is standing or sitting may differ by as muchas 15 centimeters, von Recklinghausen proposes the levelmade by a dorsoventral line drawn from the bottom of thesternum (costal angle) to the spinal column. This authorf hasdevised a simple apparatus for determining venous and capillarypressures, the principle of which is shown by the schema repre-sented in Fig. 206. * Muench. mediz. Wochenschrift, 1903, 1904. fVon Recklinghau
RMW02GE2–Archive image from page 142 of Die fossilen Tintenfische; eine paläozoologische. Die fossilen Tintenfische; eine paläozoologische Monographie diefossilentinte00naef Year: 1922 I. Zweifelhafte Formen der Prototeuthoidea. 133 eines Kürbisgroßen „Laibsteines'1) dorsoventral geteilt, so daß die beiden Spaltflächen beinahe identische Bilder vom Habitus des Tieres in Dorsal- bzw. Ventralansicht geben. Bei näherem Zusehen zeigte sich allerdings, daß die nach Fr aas (p. 223) „prachtvoll erhal- tenen Augen' auf dem Stein übermalt waren und nur eine außerdem falsche Interpretion des Präparators (?) da
RMPFE1TN–. Denkschriften der Medicinisch-Naturwissenschaftlichen Gesellschaft zu Jena. ''â //' Vaq l/'ii Flip. 71 Das Centralnervensystem der Monotremcn und Marsupialier. gen der vorzugsweise Kreuzungsfasern, aber auch einzelne kleine, dorsoventral absteigend, Bündelchen enthält alsdann einen zweiten mittleren, kreuzungsärmeren und daher auf der Figur heller erscheinenden Abschnitt (*â ) und endlich einen dritten ventralen Abschnitt, welcher neben Kreuzungsfasern zahlreiche quergeschnittene Fasern enthält und an grauer Substanz auffällig arm ist (W auf Fig. 30). Die Decke des Ventrikels wird vom V
![. Die Decapodenfauna der Adria : Versuch einer Monographie . Fig. 55. Scyllarides latus (Latreille). [Originale.] a) Umriß des Körpers, b) Pleopode eines ^. c) Pleopode eines 9' (Alle Figuren verkleinert.) Erste Antenne länger als die zweite, das Basalglied viel dicker als die zwei folgenden Stielglieder; Geißeln kurz. Zweite Antenne mächtig und dorsoventral abgeflacht (als Schwimmorgan') ent- *) Vielleicht wäre es richtiger, diesen Vorsprung, der mit dem Cephalo- thorax in fester Verbindung steht, als Rostrum zu bezeichnen, während die „verzahnte" Platte dem modifizierten Antennalsegment Stock Photo](https://c8.alamy.com/comp/MEE7TB/die-decapodenfauna-der-adria-versuch-einer-monographie-fig-55-scyllarides-latus-latreille-originale-a-umri-des-krpers-b-pleopode-eines-c-pleopode-eines-9-alle-figuren-verkleinert-erste-antenne-lnger-als-die-zweite-das-basalglied-viel-dicker-als-die-zwei-folgenden-stielglieder-geieln-kurz-zweite-antenne-mchtig-und-dorsoventral-abgeflacht-als-schwimmorgan-ent-vielleicht-wre-es-richtiger-diesen-vorsprung-der-mit-dem-cephalo-thorax-in-fester-verbindung-steht-als-rostrum-zu-bezeichnen-whrend-die-verzahntequot-platte-dem-modifizierten-antennalsegment-MEE7TB.jpg ". Die Decapodenfauna der Adria : Versuch einer Monographie . Fig. 55. Scyllarides latus (Latreille). [Originale.] a) Umriß des Körpers, b) Pleopode eines ^. c) Pleopode eines 9' (Alle Figuren verkleinert.) Erste Antenne länger als die zweite, das Basalglied viel dicker als die zwei folgenden Stielglieder; Geißeln kurz. Zweite Antenne mächtig und dorsoventral abgeflacht (als Schwimmorgan') ent- *) Vielleicht wäre es richtiger, diesen Vorsprung, der mit dem Cephalo- thorax in fester Verbindung steht, als Rostrum zu bezeichnen, während die „verzahnte" Platte dem modifizierten Antennalsegment Stock Photo")
RMMEE7TB–. Die Decapodenfauna der Adria : Versuch einer Monographie . Fig. 55. Scyllarides latus (Latreille). [Originale.] a) Umriß des Körpers, b) Pleopode eines ^. c) Pleopode eines 9' (Alle Figuren verkleinert.) Erste Antenne länger als die zweite, das Basalglied viel dicker als die zwei folgenden Stielglieder; Geißeln kurz. Zweite Antenne mächtig und dorsoventral abgeflacht (als Schwimmorgan') ent- *) Vielleicht wäre es richtiger, diesen Vorsprung, der mit dem Cephalo- thorax in fester Verbindung steht, als Rostrum zu bezeichnen, während die „verzahnte" Platte dem modifizierten Antennalsegment
RM2AJEGYW–Transactions of the American Association of Obstetricians and Gynecologists for the year ... . Fig. 6.—Patient No. 6. One quart bismuth mixture injected in Sims position.Tube inserted 5 inches. Skiagraphed dorsoventral after twenty minutes. mitted but a short distance, since many observers had thoughtthat this absorption took place alone in the rectum and sigmoid.Now, while it is believed that these latter have a considerablepower to absorb large quantities of water, it did not seem 20 H. WELLINGTON YATES. rational that they alone eonld take up so much. The mannerof absorption of foods into th
RMW01HM1–Archive image from page 87 of Die fossilen Tintenfische; eine paläozoologische. Die fossilen Tintenfische; eine paläozoologische Monographie diefossilentinte00naef Year: 1922 78 II. Teil: Die Sepioidea oder Sepia-artigen Tintenfische. In anderen Merkmalen ergibt sich aber ebenso deutlich eine Annäherung an die Sepien: i. Schon der Anfangsteil des Phragmo- cons ist deutlich dorsoventral zusammengedrückt, die Anfangs- kammer nicht rund, blasenartig; 2. der Dorn ist relativ klein, Sepia-ähnlich; 3. die späteren Kammern erscheinen immer flacher und die Septen sind nicht quer zur Conothek eingefü
RMMCNPN0–. Fig. 84. Ventralansicht von Pristis pectinatus, lebend. Typen von gleicher Lebensweise wie Pristiophorus.) Der älteste be- kannte Pristide aus der oberen Kreide des Libanon ist Sclerorhynchus atavus. Eine Riesenform aus dem Obereozän Ägyptens ist Propristis Schweinfurthi (Fig. 85). 13. F. Rhinidae (Meerengel). Fossil vom oberen Jura an. — Lebende Type: Rhina (= Squatina). (Tektospondyl. Vivipar. Zwei Dorsalflossen; Analflosse fehlt. Körper dorsoventral abgeflacht und die Brust- und Bauchflossen verbreitert, aber der Kopf vorn abgerundet und der ganze Körper mehr haifisch- ähnlich (Fig. 86),
RM2AXGGHX–A manual of anatomy . cm.)in width and nearly 4 inches (10 cm.) dorsoventrally, and thenextends into the abdominal cavity. In the female the width isgreater and the dorsoventral dimension less. Its capacity is about ipint (500 to 700 c.c.) but is usually emptied when it contains 8 to 10ounces (about 300 c.c). THE BLADDER 321 The bladder presents an apex, a base, a superior and ventroinjeriorand two lateral surfaces and illy defined borders. The apex {vertex vesica) is best seen in the nearly empty bladderand lies just behind the symphysis pubis. From this the urachusextends to the umbilicus. T
![Archive image from page 189 of Die Decapodenfauna der Adria . Die Decapodenfauna der Adria : Versuch einer Monographie diedecapodenfaun00pest Year: 1918 Fig. 55. Scyllarides latus (Latreille). [Originale.] a) Umriß des Körpers, b) Pleopode eines . c) Pleopode eines 9' (Alle Figuren verkleinert.) Erste Antenne länger als die zweite, das Basalglied viel dicker als die zwei folgenden Stielglieder; Geißeln kurz. Zweite Antenne mächtig und dorsoventral abgeflacht (als Schwimmorgan') ent- ) Vielleicht wäre es richtiger, diesen Vorsprung, der mit dem Cephalo- thorax in fester Verbindung steht, als Stock Photo](https://c8.alamy.com/comp/W03DA2/archive-image-from-page-189-of-die-decapodenfauna-der-adria-die-decapodenfauna-der-adria-versuch-einer-monographie-diedecapodenfaun00pest-year-1918-fig-55-scyllarides-latus-latreille-originale-a-umri-des-krpers-b-pleopode-eines-c-pleopode-eines-9-alle-figuren-verkleinert-erste-antenne-lnger-als-die-zweite-das-basalglied-viel-dicker-als-die-zwei-folgenden-stielglieder-geieln-kurz-zweite-antenne-mchtig-und-dorsoventral-abgeflacht-als-schwimmorgan-ent-vielleicht-wre-es-richtiger-diesen-vorsprung-der-mit-dem-cephalo-thorax-in-fester-verbindung-steht-als-W03DA2.jpg "Archive image from page 189 of Die Decapodenfauna der Adria . Die Decapodenfauna der Adria : Versuch einer Monographie diedecapodenfaun00pest Year: 1918 Fig. 55. Scyllarides latus (Latreille). [Originale.] a) Umriß des Körpers, b) Pleopode eines . c) Pleopode eines 9' (Alle Figuren verkleinert.) Erste Antenne länger als die zweite, das Basalglied viel dicker als die zwei folgenden Stielglieder; Geißeln kurz. Zweite Antenne mächtig und dorsoventral abgeflacht (als Schwimmorgan') ent- ) Vielleicht wäre es richtiger, diesen Vorsprung, der mit dem Cephalo- thorax in fester Verbindung steht, als Stock Photo")
RMW03DA2–Archive image from page 189 of Die Decapodenfauna der Adria . Die Decapodenfauna der Adria : Versuch einer Monographie diedecapodenfaun00pest Year: 1918 Fig. 55. Scyllarides latus (Latreille). [Originale.] a) Umriß des Körpers, b) Pleopode eines . c) Pleopode eines 9' (Alle Figuren verkleinert.) Erste Antenne länger als die zweite, das Basalglied viel dicker als die zwei folgenden Stielglieder; Geißeln kurz. Zweite Antenne mächtig und dorsoventral abgeflacht (als Schwimmorgan') ent- ) Vielleicht wäre es richtiger, diesen Vorsprung, der mit dem Cephalo- thorax in fester Verbindung steht, als
RMMA7CEA–. The elasmobranch fishes . ^/y//.. D Fig. 2.5. Diagram A-D illustrating the gill-arch theory of Gegenbaur for the origin of paired fins, h.r., branchial ray; g.a., gill arch. Further objections have been offered against the gill-arch theory. If the skeleton of the pectoral fin arose from the branchial rays of a single arch doubtless it at first occupied a dorsoventral position, a position disadvanta- geous to the fin as a directing organ. Moreover, if the pectoral arose as a modi- fied gill arch, why are there so many segments involved in the fin? Again, paired fins both in their development
RM2AKJ9N8–Zeitschrift für wissenschaftliche Zoologie . ehtund die ungefähre Fortsetzung der letzteren bildet. Der den Schwanzdes Kommas lateral begrenzende Rand bildet einen dünnen Lappen,welcher im vorderen Abschnitt besonders deutlich ausgeprägt ist undhier in sich die vom lateral-hinteren Teil der Nasoethmoidalregionhorizontal nach hinten hervorgehende Knorpelsubstanz einschließt.Dieser knorpehge, dorsoventral stark abgeplattete Fortsatz wird, wie 176 K. Okajima, schon angegeben, als Graumen- oder Antorbitalfortsatz (Gaurn Fig. 4,Taf. IV) bezeichnet; er endigt, hinten sich allmählich verjüngend, frei
RMW01M7A–Archive image from page 92 of Die fossilen Tintenfische; eine paläozoologische. Die fossilen Tintenfische; eine paläozoologische Monographie diefossilentinte00naef Year: 1922 Sonderheiten: Die Schulpe sind stark gewölbt, auch im Querschnitt, und zwingen dazu, eine lateral zusammengedrückte Gestalt des Tieres, gegenüber der dorsoventral mehr oder weniger abgeplatteten der Euscpiinae anzunehmen. Darin standen sie offenbar den anderen Sepioiden noch näher und man wird auch die spezielle Form der Ven- tralarme, die bei Sepia mit der Mantel- form in Zusammenhang steht (Fig. 31), Fig. 34. Das Frag
RMMABD7M–. Dr. H. G. Bronn's Klassen und Ordnungen des Thier-Reichs : wissenschaftlich dargestellt in Wort und Bild . Abb. 357. Schema des Diaphragma von Galeodes (Galeodellus) caspnis (Bir.), von hinten her gesehen (Kästner 1933). — Durch das Dia- phragma werden hindurchgelassen d = Darmkanal, mit nicht völlig schließendem Muskelring; h = Herz; n2, nz — Nerven des 2. und 3. opi- sthosomalen Segments, N — Haupt- nervenstrang (Ramus medialis); t = Tracheenstämme, durch Ringmusku- latur verengt; m = Dorsoventral- muskel des 2. opisthosomalen Seg- ments, der Hinterseite des Dia- phragma eng anliegend.
RM2AX8Y09–Leitfaden des Röntgen-Verfahrens . dorsal. de. V. do.: dextrovento dorsal. do. V.: dorsoventral. de. s. dftxtrosinistral. de, do, V,: dextrodorsoventral. s. do. V,: sinistrodorsoventral. Die schiefen Richtungen sind bestimmt durch den Winkel(Fig. 3 <^ «), welchen sie mit der Ventrodorsalen einschliessen,und heissen: Von rechts vorn nach links hinten: dextroventrodorsal(Fig. 3 de. v. do.). Umgekehrt: sinistrodorsoventral (Fig. 3 s. do. v.). Von links vorne nach rechts hinten: sinistroventrodorsal (s. v.do.). Umgekehrt: dextrodorsoventral (de. do. v.). — 198 — Für die Extremitäten empfehlen
RMT3XRG6–Archive image from page 152 of Die stämme der wirbeltiere (1919). Die stämme der wirbeltiere diestmmederwir00abel Year: 1919 Fische (Pisces). 131 Restes, die Traquair wohl mit Recht als die Ventralseite bezeichnet, sind in der Vorderregion des dorsoventral stark abgeflachten Vorder- körpers auf der Schieferplatte deutlich umgrenzte Skeletteile zu beob- achten, die dem Kopfskelett angehören müssen; an den bogenförmigen
RMMCP91N–. Fig. 222. Eosphora aurtta Ehrbg. Dorsal- und Seitenansicht, Kauer (nach Gosse und Ehrenberg). licherweise ist O. papulosa Länge: ca. 270 /<. In einer torfigen Lache bei Berlin von Ehrenberg erbeutet 12. Fani. Diaschizidae ^). Von Dr. R. Sachse (Leipzig). Körper mehr oder weniger zylindrisch, nicht oder bald seitlich, bald dorsoventral zusammengedrückt. Das kräftige Integument zu 4 Platten, 2 dorsolateralen und 2 ventralen ausgebildet; nur zwischen diesen Platten und am Körperende weich und biegsam. Dorsalseite gewölbt, Ventralseite eben. Kopf durch die Vorderränder der Panzerplatten deutl
RM2AX8YNX–Leitfaden des Röntgen-Verfahrens . s. do. V. de.D.do.. (hepato äenal) rechts. 1), ae.ao.v. do. D. hinten. Figur 3.Bezeichnuiig des StraHenganges am Rumpfe. V. do.: ventrodorsal. s. de.: sinistrodextral. s. V. do.: sinistroventrodorsal. de. V. do.: dextrovento dorsal. do. V.: dorsoventral. de. s. dftxtrosinistral. de, do, V,: dextrodorsoventral. s. do. V,: sinistrodorsoventral. Die schiefen Richtungen sind bestimmt durch den Winkel(Fig. 3 <^ «), welchen sie mit der Ventrodorsalen einschliessen,und heissen: Von rechts vorn nach links hinten: dextroventrodorsal(Fig. 3 de. v. do.). Umgekehrt
![Embryology of insects and myriapods; Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching embryologyofinse00joha Year: 1941 272 EMBRYOLOGY OF INSECTS AND MYRIAPODS dorsoventral flattened sack, one wall of which is the embryo, the other the amnion. At first the amnion and the embryo show a similar cell structure except at the posterior end at the point of invagination. There the amniotic cavity runs out into two furrows (Fig. 202), the inner wall of the invagination representing the prolongation of the amnion Stock Photo](https://c8.alamy.com/comp/RWR92K/embryology-of-insects-and-myriapods-embryology-of-insects-and-myriapods-the-developmental-history-of-insects-centipedes-and-millepedes-from-egg-desposition-!-to-hatching-embryologyofinse00joha-year-1941-272-embryology-of-insects-and-myriapods-dorsoventral-flattened-sack-one-wall-of-which-is-the-embryo-the-other-the-amnion-at-first-the-amnion-and-the-embryo-show-a-similar-cell-structure-except-at-the-posterior-end-at-the-point-of-invagination-there-the-amniotic-cavity-runs-out-into-two-furrows-fig-202-the-inner-wall-of-the-invagination-representing-the-prolongation-of-the-amnion-RWR92K.jpg "Embryology of insects and myriapods; Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching embryologyofinse00joha Year: 1941 272 EMBRYOLOGY OF INSECTS AND MYRIAPODS dorsoventral flattened sack, one wall of which is the embryo, the other the amnion. At first the amnion and the embryo show a similar cell structure except at the posterior end at the point of invagination. There the amniotic cavity runs out into two furrows (Fig. 202), the inner wall of the invagination representing the prolongation of the amnion Stock Photo")
RMRWR92K–Embryology of insects and myriapods; Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching embryologyofinse00joha Year: 1941 272 EMBRYOLOGY OF INSECTS AND MYRIAPODS dorsoventral flattened sack, one wall of which is the embryo, the other the amnion. At first the amnion and the embryo show a similar cell structure except at the posterior end at the point of invagination. There the amniotic cavity runs out into two furrows (Fig. 202), the inner wall of the invagination representing the prolongation of the amnion
RMMCP8FY–. Fig. 358. M. quadridentata. Panzer (nach Jennings). 18. Farn. Coiurellidae. Von Dr. H. Dieffenbach (Leipzig). Der Panzer dieser kleinen Rotatorien setzt sich entweder aus 2 lateralen Platten oder einer ventralen und dorsalen zusammen. Im ersteren Falle ist der Panzer seitlich komprimiert, im letzteren dorsoventral abgeplattet. Panzer glatt gekörnelt oder gefeldert, mit- unter auch gekielt. Der mit 2 spitzen Zehen ausgestattete Fuß nicht einziehbar oder nur zum Teil. Das Cingulum ein postoraler Wimperkranz, der Trochus ein lappiges mit Cilien versehenes Gebilde. Kopf scharf abgesetzt, einzieh
RM2AX8X8C–Leitfaden des Röntgen-Verfahrens . Obere Extremität icvd. mr Figur 4.Linke und rechte Obere Extremität, Bezeiclinung der Strahlenrichtung. V d: ventrodorsal. r u: radioulnar.r V d: radioventrodorsal.uvd: ulnoventrodorsal. d v: dorsoventral. M r: ulnoradial.u d v: ulnodorsoventral. ,r d V : radio dorsoventral. Dasselbe gilt für die ausgestreckte untere Extremität mitnach vorn gerichteter Patella, nur benennen wir die: Seitliche Richtung: fibulotibial und tibioübular (s. Fig. 5). Ausserdem sprechen wir bei der Hand anstatt von der dorso-ventralen und ventrodorsalen Richtung besser von der dorsop
![Embryology of insects and myriapods; Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching embryologyofinse00joha Year: 1941 NEUROPTERA AND COLEOPTERA 291 cells, which arise later from the tip of the stomodaeal invagination and which will surround a portion of the yolk somewhat as in the Odonata, may then be designated as the secondary entoderm. The embryo elongates and at the same time decreases in diameter in the dorsoventral direction (Fig. 225). A lower layer develops diffusely without the formation of a Stock Photo](https://c8.alamy.com/comp/RWW6R8/embryology-of-insects-and-myriapods-embryology-of-insects-and-myriapods-the-developmental-history-of-insects-centipedes-and-millepedes-from-egg-desposition-!-to-hatching-embryologyofinse00joha-year-1941-neuroptera-and-coleoptera-291-cells-which-arise-later-from-the-tip-of-the-stomodaeal-invagination-and-which-will-surround-a-portion-of-the-yolk-somewhat-as-in-the-odonata-may-then-be-designated-as-the-secondary-entoderm-the-embryo-elongates-and-at-the-same-time-decreases-in-diameter-in-the-dorsoventral-direction-fig-225-a-lower-layer-develops-diffusely-without-the-formation-of-a-RWW6R8.jpg "Embryology of insects and myriapods; Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching embryologyofinse00joha Year: 1941 NEUROPTERA AND COLEOPTERA 291 cells, which arise later from the tip of the stomodaeal invagination and which will surround a portion of the yolk somewhat as in the Odonata, may then be designated as the secondary entoderm. The embryo elongates and at the same time decreases in diameter in the dorsoventral direction (Fig. 225). A lower layer develops diffusely without the formation of a Stock Photo")
RMRWW6R8–Embryology of insects and myriapods; Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching embryologyofinse00joha Year: 1941 NEUROPTERA AND COLEOPTERA 291 cells, which arise later from the tip of the stomodaeal invagination and which will surround a portion of the yolk somewhat as in the Odonata, may then be designated as the secondary entoderm. The embryo elongates and at the same time decreases in diameter in the dorsoventral direction (Fig. 225). A lower layer develops diffusely without the formation of a
RMMCP8FH–. Weber). Gosse). IL Gatt. Metopidia Ehrbg. Panzer oval, meist dorsoventral abgeplattet. Ventral- und Dorsalplatte von gleicher Größe. Der Vorderrand beider Platten und ebenso der Hinterrand der ventralen ausgebuchtet. Der Hinterrand der dorsalen ausgebuchtet, abgerundet oder zu einem mehr oder weniger spitzen Dorn ausgezogen. Dorsal- und Ventral- platte zuweilen mit medianem Kiel, selten gefeldert. Kopf ge- wöhnlich durch eine hakenförmige Chitinlamelle geschützt. Fuß 3- oder 4-fach segmentiert, fast immer mit 2 spitzen, ziemlich langen Zehen versehen. Augen in der 2-Zahl, individuell in dopp
RM2CENHP5–. The Journal of experimental zoology. Fig. 12 Diagrams made from camera-lucida drawings representing the rhab-domes which are illuminated when light enters the eye from various directions.A, eye seen in frontal section; B, eye seen in transverse section; A-P, longitudinalaxis of animal; D-V dorsoventral line; ac, accessory cells forming pigment-cup;p, pigment-cup; r, rhabdomes. Light entering the eye from any point betweena-b illuminates only the rhabdomes in the area which is cross-hatched. Lightentering the eye from any point between c-d illuminates only certain rhabdomesof the unshaded reg
RMT1HG9H–Discovery reports (1940) Discovery reports discoveryreports18inst Year: 1940 Fig. 6. Eumoiphometra aurora, a, cirrus, b, proximal part of a ray. c, fourth to tenth brachials and Pa. d, Pg from the side. All x 13. a slight angle with the dorsoventral axis but the distal half bends sharply outwards. The costals are not quite so long as the radials; they are widely separated from each other and are not deeply incised by the axillaries. The axillaries are slightly longer than broad. The first and second brachials are of the shape shown in Fig. 6b the former are widely separated. The distal edge
RMMABAY2–. Dr. H.G. Bronn's Klassen und Ordnungen des Thier-Reichs : wissenschaftlich dargestellt in Wort und Bild . B Einem Vorderende einer ent- haupteten Planarie wird in umgekehrter Orientierung ein Kopfstück angepflanzt (nach L. V. Morgan). A 1 Tag nach der Operation, ß 12 Tage nach der Operation, C Nervensystem. King, der irgendwie mit dem centralen Nervensystem des Pfropfträgers verwächst (Fig. 233, E). Findet dies nicht oder in ungenügender Weise statt, so entstehen nach Morgan Doppelbildungen. Eine weitere Kategorie von Versuchen hat als Charakteristikum, daß die Pfropfe in dorsoventral vertau
RM2CENH5R–. The Journal of experimental zoology. B p- ^rClf^W 1 m t^ < < •^ m % c. D Fig. 18 Diagram representing the relation of the axis of photic stimulationto the axes of the various rhabdomes when the eye is illuminated from differentdirections. The diagrams are made from camera-lucida drawings of sections. Aand B, frontal sections of the eye; C and D, transverse sections of the eye;A-P,antero-posterior line; D-V, dorsoventral line;o, b, c, d, arrows indicating the dif-ferent beams of light; ac, accessory cells; p, pigment-cup; 1-9, rhabdomes. REACTIONS TO LIGHT IN PLANARIA MACULATA 109 T
RMT0C7A7–Dr HG Bronn's Klassen und Dr. H.G. Bronn's Klassen und Ordnungen des Thier-Reichs : wissenschaftlich dargestellt in Wort und Bild drhgbronnsklasse040102bron Year: 1912 2S93 auseinanderrücken, während die Kommissuren schmäler werden und nicht mehr so dicht aufeinanderfolgen, vollzieht sich der Übergang zu den Mark- strängen (Fig. 12, 7ns). Die letzteren behalten durch den ganzen Yorder- körper ihren drehrunden Querschnitt und beginnen erst ein Stück hinter den Germarien sich quer auszuziehen und damit dorsoventral abzuflachen. Von ihnen gehen Dorsalnerven zum Kücken, Ventralnerven zur Bauch- f
RMMABB8X–. Dr. H.G. Bronn's Klassen und Ordnungen des Thier-Reichs : wissenschaftlich dargestellt in Wort und Bild . und dicker, so daß sie den in Textfig. 99a, Nl dargestellten Quer- schnitt darbieten. Das Gehirn hat bei solchen Arten die Gestalt, wie sie Dendy (610, tab. VII, fig. 4, nc) für G. spenceri und Loman (612, pag. 149) — fälschlich als Typus des B}iync}iode7nus-Gehirns — abgebildet haben: aus der medianen Verschmelzung der ihre dorsoventral abgeplattete Form im ganzen beibehaltenden Markstränge entstanden. Indessen gehört Lomans Rh. megaloplühahnus zu der seither aufgestellten Famihe der Co
RM2CE4GPE–. Turbellaria . ei Arten der Gattung Ärtioposihiazu sehen ist, wo das dorsale und ventrale Parenchymmuskelgeflecht (LH,2, mlqd u. mlqv) sich direkt fortsetzt in die Muskelhülle des Copulations- 3031 apparates. Meist liegt die gemeinsame Muskelhülle der Muscularis desAtrium dicht an, als ein aus quer-, längs- und dorsoventral verlaufendenFasern gebildeter Filz (XLIII, 6, mit und Textfig. 138—140, die äußere,horizontal gestrichelte Lage der Muskelmasse mw). Ihre Dicke wechselt,und wo sie eine bedeutendere Mächtigkeit erreicht, hat es den Anschein,als ob sich auch radiäre Fasern an ihrer Bildung
RMT3XR3F–Archive image from page 147 of Die stämme der wirbeltiere (1919). Die stämme der wirbeltiere diestmmederwir00abel Year: 1919 126 Die Stämme der Wirbeltiere. merkmal von untergeordneter Bedeutung ist.) — Ganze, gut erhaltene Skelette sind in den lithographischen Schiefern Bayerns nicht selten (z. B. Fig. 87). 14. F. Rhinobatidae. Fossil vom oberen Jura an. — Lebende Type: Rhinobatus. (Tekto- spondyl. Vivipar. Kiemenspalten ventral gelegen. Schädel in eine dreieckige, breite, dorsoventral abgeflachte Spitze ausgezogen.) Die gut erhaltenen Exemplare aus dem oberen weißen Jura Bayerns (z. B. Rhi
RMMEEFR7–. Die fossilen Tintenfische; eine paläozoologische Monographie . Sonderheiten: Die Schulpe sind stark gewölbt, auch im Querschnitt, und zwingen dazu, eine lateral zusammengedrückte Gestalt des Tieres, gegenüber der dorsoventral mehr oder weniger abgeplatteten der Euscpiinae anzunehmen. Darin standen sie offenbar den anderen Sepioiden noch näher und man wird auch die spezielle Form der Ven- tralarme, die bei Sepia mit der Mantel- form in Zusammenhang steht (Fig. 31), Fig. 34. Das Fragment der Fig. 30, },},c—d, von hinten betrachtet. / Stelle des reduzierten Capitulum (Fig. 32 a), 2 Rest der Ven
RM2CEN1CW–. Archiv furgeschichte. ¶rmigen schwarzen Flecken, deren Ver-teilung sich aus Fig. 107 besser als auseiner Beschreibung ergibt. Ventralseitetrüb gelblich. Beine schwarz und lichtgelblich; schwarz die Beugeseiten; gelb-lich die Streckseite der Femora 2 undFig. 107. g ^^.^ Ausnahme der Mitte der Seiten, die Innenseite der Femora 1, die Streckseite der Tibien. Abdomen Sgm. 1â2 seitlich und dorsoventral stark erweitert;Basis von 3 stark verengt, von Ende 8 an schlank, bis zum Ende fastgleich. Bräunlich oliv (lebend blau ?) und schwarz gezeichnet, wobeidie lichte Farbe etwas überwiegt. Sgm. 1 li
RMMABDFJ–. Dr. H. G. Bronn's Klassen und Ordnungen des Thier-Reichs : wissenschaftlich dargestellt in Wort und Bild . Abb. 168. Querschnitt durch den Stiel eines männlichen Malleolus von Galeodes in Höhe der Zapfen (Schnittrichtung B in Abb. 166) (nach Rühlemann, etwas schematisiert). Bezeichnungen wie in Abb. 166. in je einen feinen Fortsatz, die ..Sinnesfaser** auslaufen. Diese hell plas- matischen Sinneszellen sind so voluminös, daß sie mit ihrer Menge den Fächer an dieser Stelle dorsoventral fast ausfüllen und auch den ventralen Blutraum des Fächers verdrängen (Abb. 166, sz). Sie sind zu Gruppen ve
RMRN8BRA–. Anatomischer Anzeiger. Anatomy, Comparative; Anatomy, Comparative. 627 ventrale Wand des benachbarten, sich dorsoventral verengenden Darm- abschnittes deutUch abgesetzt. Gleichzeitig treten die mittleren Ab-. v.D. B.- Fis- 1. HH Fio-. q. L. r.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Anatomische Gesellschaft. Jena : G. Fischer
![. Kig. 75. Fig. 75 u. 76. Dicranota bi- maculata (Schunini.), Puppe. a seitlich; * veiUial g'^sehen. Nach Mi all. Fig. 74. Dicranota bitnaculata (Sfhumni.), I.arve. a von der Ventialseite; b xx. c Kopf dorsal und ventral gesehen. Nach M i a 11. ästelte Tracheen. Vorder- stigmen fehlen. Hinterstig- men auf dem 12. Segment, dorsal über der Basis der hinteren langen Anhänge auf 2 kleinen Erhöhungen. Länge 20 mm. Puppe (Fig. 75 u. 76, nach Miall) propnenstisch, Vorderstigmen verlängert, dorsoventral abgeflacht, am " Ende erweitert. 3. und 7. Hinterleibssegment mit 1, 4. bis 6. Segment mit 2 q Stock Photo](https://c8.alamy.com/comp/MCMDCB/kig-75-fig-75-u-76-dicranota-bi-maculata-schunini-puppe-a-seitlich-veiuial-gsehen-nach-mi-all-fig-74-dicranota-bitnaculata-sfhumni-iarve-a-von-der-ventialseite-b-xx-c-kopf-dorsal-und-ventral-gesehen-nach-m-i-a-11-stelte-tracheen-vorder-stigmen-fehlen-hinterstig-men-auf-dem-12-segment-dorsal-ber-der-basis-der-hinteren-langen-anhnge-auf-2-kleinen-erhhungen-lnge-20-mm-puppe-fig-75-u-76-nach-miall-propnenstisch-vorderstigmen-verlngert-dorsoventral-abgeflacht-am-quot-ende-erweitert-3-und-7-hinterleibssegment-mit-1-4-bis-6-segment-mit-2-q-MCMDCB.jpg ". Kig. 75. Fig. 75 u. 76. Dicranota bi- maculata (Schunini.), Puppe. a seitlich; * veiUial g'^sehen. Nach Mi all. Fig. 74. Dicranota bitnaculata (Sfhumni.), I.arve. a von der Ventialseite; b xx. c Kopf dorsal und ventral gesehen. Nach M i a 11. ästelte Tracheen. Vorder- stigmen fehlen. Hinterstig- men auf dem 12. Segment, dorsal über der Basis der hinteren langen Anhänge auf 2 kleinen Erhöhungen. Länge 20 mm. Puppe (Fig. 75 u. 76, nach Miall) propnenstisch, Vorderstigmen verlängert, dorsoventral abgeflacht, am " Ende erweitert. 3. und 7. Hinterleibssegment mit 1, 4. bis 6. Segment mit 2 q Stock Photo")
RMMCMDCB–. Kig. 75. Fig. 75 u. 76. Dicranota bi- maculata (Schunini.), Puppe. a seitlich; * veiUial g'^sehen. Nach Mi all. Fig. 74. Dicranota bitnaculata (Sfhumni.), I.arve. a von der Ventialseite; b xx. c Kopf dorsal und ventral gesehen. Nach M i a 11. ästelte Tracheen. Vorder- stigmen fehlen. Hinterstig- men auf dem 12. Segment, dorsal über der Basis der hinteren langen Anhänge auf 2 kleinen Erhöhungen. Länge 20 mm. Puppe (Fig. 75 u. 76, nach Miall) propnenstisch, Vorderstigmen verlängert, dorsoventral abgeflacht, am " Ende erweitert. 3. und 7. Hinterleibssegment mit 1, 4. bis 6. Segment mit 2 q
![. Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching. Embryology -- Insects; Embryology -- Myriapoda. 272 EMBRYOLOGY OF INSECTS AND MYRIAPODS dorsoventral flattened sack, one wall of which is the embryo, the other the amnion. At first the amnion and the embryo show a similar cell structure except at the posterior end at the point of invagination. There the amniotic cavity runs out into two furrows (Fig. 202), the inner wall of the invagination representing the prolongation of the amnion, the outer wall the Stock Photo](https://c8.alamy.com/comp/REYJAW/embryology-of-insects-and-myriapods-the-developmental-history-of-insects-centipedes-and-millepedes-from-egg-desposition-!-to-hatching-embryology-insects-embryology-myriapoda-272-embryology-of-insects-and-myriapods-dorsoventral-flattened-sack-one-wall-of-which-is-the-embryo-the-other-the-amnion-at-first-the-amnion-and-the-embryo-show-a-similar-cell-structure-except-at-the-posterior-end-at-the-point-of-invagination-there-the-amniotic-cavity-runs-out-into-two-furrows-fig-202-the-inner-wall-of-the-invagination-representing-the-prolongation-of-the-amnion-the-outer-wall-the-REYJAW.jpg ". Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching. Embryology -- Insects; Embryology -- Myriapoda. 272 EMBRYOLOGY OF INSECTS AND MYRIAPODS dorsoventral flattened sack, one wall of which is the embryo, the other the amnion. At first the amnion and the embryo show a similar cell structure except at the posterior end at the point of invagination. There the amniotic cavity runs out into two furrows (Fig. 202), the inner wall of the invagination representing the prolongation of the amnion, the outer wall the Stock Photo")
RMREYJAW–. Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching. Embryology -- Insects; Embryology -- Myriapoda. 272 EMBRYOLOGY OF INSECTS AND MYRIAPODS dorsoventral flattened sack, one wall of which is the embryo, the other the amnion. At first the amnion and the embryo show a similar cell structure except at the posterior end at the point of invagination. There the amniotic cavity runs out into two furrows (Fig. 202), the inner wall of the invagination representing the prolongation of the amnion, the outer wall the
RMRN5ME1–. Animal biology. Zoology; Biology. 190 METAZOAN PHYLA mollusks in that the two valves of the shell are dorsoventral and not lateral and that the internal structure is more wormUke than mollusk- like. They are often called lamp shells because of the resemblance of the shell, when viewed from the side, to an antique lamp. The ventral valve is larger than the dorsal one and at the margin where the two articulate extends beyond the other, forming a beak. The tip of this beak is pierced by an opening, or foramen, through which is passed a fleshy peduncle which permanently attaches the animal to so
RMRGFNFD–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. wheeler: ants of the genus leptomyrmex mayr 111 collapsible. Head narrower and longer, with larger, more nearly circular and more convex eyes. Cheeks straight and parallel, occipital border much narrower; dorsoventral diameter of head at front much shorter, only half its length without the mandibles. Frontal carinse. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the
RMRGJMMF–. Bulletin - New York State Museum. Science. IJEEKMANTOWN AND CHAZY FORMATIONS OF CHAMTLAIN BASIN 4O3 The conch, if not circular in section, may be either compressed (when the transverse diameter has been shortened) or depressed (when the dorsoventral diameter lias been shortened). The direction of the conch is designated as apicad (in apical direction), orad (in oral direction), dorsad and ventrad. The apertural margin frequently possesses, besides the hyponomic sinus, lateral expansions, termed crests or lappets. The sipliuncle is the calcareous tube containing the fleshy siphon. It may be t
RMRH44G3–. Breviora. 18 BREVIORA No. 435. Figure 3. Sketch of the carapace of Chelus lewisi to show the pattern of bone sutures as well as those scute sulci that can be detected. Some compensation has been made for distortions resulting from the dorsoventral compaction of the specimen (compare with Plate 4).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. , Museum
RMRHP77H–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 128 WESLEY R. COE. just behind the head. In Neuronemertes the walls of the sper- maries are not provided with the thick spiral musculature found in several other pelagic forms and which serves to supplement the weak muscles of the body walls in the forcible discharge of the spermatozoa. A similar result is accomplished however by the contraction of the highly developed dorsoventral muscles which closely invest the spermaries in that genus. It therefore seems reasonable to suspect that these supplementary nervous tissues may
![. Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching. Embryology -- Insects; Embryology -- Myriapoda. NEUROPTERA AND COLEOPTERA 291 cells, which arise later from the tip of the stomodaeal invagination and which will surround a portion of the yolk somewhat as in the Odonata, may then be designated as the secondary entoderm. The embryo elongates and at the same time decreases in diameter in the dorsoventral direction (Fig. 225). A lower layer develops diffusely without the formation of a gastrula furrow (Fig. Stock Photo](https://c8.alamy.com/comp/REYJ9X/embryology-of-insects-and-myriapods-the-developmental-history-of-insects-centipedes-and-millepedes-from-egg-desposition-!-to-hatching-embryology-insects-embryology-myriapoda-neuroptera-and-coleoptera-291-cells-which-arise-later-from-the-tip-of-the-stomodaeal-invagination-and-which-will-surround-a-portion-of-the-yolk-somewhat-as-in-the-odonata-may-then-be-designated-as-the-secondary-entoderm-the-embryo-elongates-and-at-the-same-time-decreases-in-diameter-in-the-dorsoventral-direction-fig-225-a-lower-layer-develops-diffusely-without-the-formation-of-a-gastrula-furrow-fig-REYJ9X.jpg ". Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching. Embryology -- Insects; Embryology -- Myriapoda. NEUROPTERA AND COLEOPTERA 291 cells, which arise later from the tip of the stomodaeal invagination and which will surround a portion of the yolk somewhat as in the Odonata, may then be designated as the secondary entoderm. The embryo elongates and at the same time decreases in diameter in the dorsoventral direction (Fig. 225). A lower layer develops diffusely without the formation of a gastrula furrow (Fig. Stock Photo")
RMREYJ9X–. Embryology of insects and myriapods; the developmental history of insects, centipedes, and millepedes from egg desposition [!] to hatching. Embryology -- Insects; Embryology -- Myriapoda. NEUROPTERA AND COLEOPTERA 291 cells, which arise later from the tip of the stomodaeal invagination and which will surround a portion of the yolk somewhat as in the Odonata, may then be designated as the secondary entoderm. The embryo elongates and at the same time decreases in diameter in the dorsoventral direction (Fig. 225). A lower layer develops diffusely without the formation of a gastrula furrow (Fig.
RMRGF5MY–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Fig. 19. Median dorsoventral sections through the initial shells of Gonia- tites (Paragoniatites) newsomi Smith from the Mississippian (a), and Polyptychites sp. from the Lower Cretaceous (&). (After Schindewolf 1939a.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Mus
RMRMMN9E–. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Fig. 33. Dorsoventral cross-sections of Lange- baanweg Agriotherium hemimandibles with arrows indicating premasseteric fossae. A. L45114. B. L45062. The teeth of Indarctos and Agriotherium provide much evidence in support of the theory that they are directly related. As is often the case with carnivore incisors and canines, little of signifi- cance emerged from a study of these teeth in Indarctos and Agriotherium, except that they are essentially similar morphologically The I1 and I2 are perhaps the
RMRHM9NH–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Figure 7. Thick 1100 ^m) cross section of a demibranch showing the distribution of muscle fibers and the SCP-like peptide YFAFPRQamide. The muscle fibers are stained with phalloidin and fluoresce green. Red fluorescence is associated with YFAFPRQamide and is concentrated in the tips of the filaments, but lesser amounts are also found on the abfrontal face of the filaments in the sublilamentar tissue. Abbreviations: bv = blood vessel; dvm = dorsoventral muscle; gf = gill filament; 1m = longitudinal muscle; sft = subfilamentar
![. A text-book of embryology for students of medicine [electronic resource]. Embryology; Embryology. THE DEVELOPMENT OF THE HEAD SKELETON, 401 repeat, in this connection, some points previously men- tioned. The membranous anterior hyoid or second visceral arch, at a certain stage of development, presents, in its interior, the dorsoventral cartilaginous bar known as Reichert's carti- lage. This is parallel with Meckel's cartilage, and, like it, is in contact by its dorsal or cranial end with the outer wall of the auditory labyrinth. A shorter bar of cartilage appears in the third visceral arch, Stock Photo](https://c8.alamy.com/comp/RJNA4X/a-text-book-of-embryology-for-students-of-medicine-electronic-resource-embryology-embryology-the-development-of-the-head-skeleton-401-repeat-in-this-connection-some-points-previously-men-tioned-the-membranous-anterior-hyoid-or-second-visceral-arch-at-a-certain-stage-of-development-presents-in-its-interior-the-dorsoventral-cartilaginous-bar-known-as-reicherts-carti-lage-this-is-parallel-with-meckels-cartilage-and-like-it-is-in-contact-by-its-dorsal-or-cranial-end-with-the-outer-wall-of-the-auditory-labyrinth-a-shorter-bar-of-cartilage-appears-in-the-third-visceral-arch-RJNA4X.jpg ". A text-book of embryology for students of medicine [electronic resource]. Embryology; Embryology. THE DEVELOPMENT OF THE HEAD SKELETON, 401 repeat, in this connection, some points previously men- tioned. The membranous anterior hyoid or second visceral arch, at a certain stage of development, presents, in its interior, the dorsoventral cartilaginous bar known as Reichert's carti- lage. This is parallel with Meckel's cartilage, and, like it, is in contact by its dorsal or cranial end with the outer wall of the auditory labyrinth. A shorter bar of cartilage appears in the third visceral arch, Stock Photo")
RMRJNA4X–. A text-book of embryology for students of medicine [electronic resource]. Embryology; Embryology. THE DEVELOPMENT OF THE HEAD SKELETON, 401 repeat, in this connection, some points previously men- tioned. The membranous anterior hyoid or second visceral arch, at a certain stage of development, presents, in its interior, the dorsoventral cartilaginous bar known as Reichert's carti- lage. This is parallel with Meckel's cartilage, and, like it, is in contact by its dorsal or cranial end with the outer wall of the auditory labyrinth. A shorter bar of cartilage appears in the third visceral arch,
RMRFRMDC–. Carnegie Institution of Washington publication. YOUNG TWIN HUMAN EMBRYOS WITH 17-10 PAIRED SOMITES. 21 tion of the openings except a slight one for the first. The first pouch is very large and runs laterally and dorsally out to come into contact with the ectoderm, with which it is fused in two areas for a very short distance. The cephalocaudal diameter of the pouch is much greater than the dorsoventral. and its cavity is wide and capacious, hut as yet undivided into dorsal and ventral portions. There is a very peculiar condition found here, however, for just before the lateral edge of the po
RMRN81JF–. Anatomy of the cat. Cats; Mammals. THE VERTEBRAL COLUMN. 5 Differential Characters of the Thoracic Vertebra (Fig. 4). —Following the thoracic vertebrae caudad there is to be seen a gradual increase in the size of the centra brought about by an increase in their craniocaudal and transverse measurements.. The dorsoventral measurements remain nearly the same. The costal facets (Fig. 4, c) shift caudad so'that on the eleventh, twelfth, and thirteenth thoracic vertebra; each lies entirely on the cranial end of its centrum, while the caudal end. Please note that these images are extracted from sca
RMRJ4KEP–. The chordates. Chordata. Reproduction 269 MC contiguous to the endoderm. The thick part is destined to form a seg- ment of body-muscle and is therefore called the myotome (Fig. 223, M). The outer layer, being, in con- junction with the ectoderm, the body-wall of the embryo, is called the somatic or parietal layer. The inner layer, associated with the wall of the enteron, is called visceral or splanchnic. The now capa- cious cavity resulting from expansion of the pouch is a segment of the embryonic body- cavity or coelom. The myotome rapidly thickens and also increases its dorsoventral extent
RMRG76KY–. Bulletin - United States National Museum. Science. MOKOGRAPH OF THE EXISTING CRINOIDS. 155 the longitudinal axis of the arm. Their component segments either are fitted closelj^ end to end, or the more proximal, sometimes all, have their angles cut away, admitting of motion in a plane parallel to the dorsoventral plane of the arm: there is no provision for lateral motion. The earlier geni- tal pinnules stand up like the oral pinnules, those of the two sides of the arm being parallel with each other, and the distal ends are always more or less curved outward toward tiie arm tips. Going outward
RMRH5CDN–. Breviora. 8 BREVIORA No. 143 tends to be subaerodont. (2) D. colombiana has fifteen dentary teeth, D. paraguayensis has ten {fide Amaral) and D. guianensis twelve. (3) The anterior teeth, as far as they are preserved, are less bulbous than in the Recent species. (4) The occlusal outline of the tooth crowns is round or suboval in the fossil and sub- oval or subrhoml)ic in D. guianensis. (5) The crown surface of the molariform teeth is more flattened, and the dorsoventral compression of the entire tooth is less in the fossil. The referred skeletal elements are somewhat larger than would be exp
RMRHMPD0–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 66 DANIEL S. GROSCH For purposes of estimating the site of the major loss of substance during starvation, wasps were transected at the petiole and the weights of abdomens and weights of anterior regions were compared in freshly eclosed and in starved wasps.. FIGTKE 1. ^bove: Lateral views of a starved male (Left) and a starved female (Right) with abdomens or an unstarved male and female for comparison. The extreme dorsoventral flattening depicted can be seen in starved animals which are still quite active. It is interesting
RMRE0ERA–. A manual of zoology. Zoology. ///. ANNELIDA: niRUDINEI. 319 A third character is the marked flattening of the body in the dorsoventral direction (except in Ichthyobdellidre and a few other forms), the animals thus recalling the flatworms. This may be the result of the very slight development of the ccelom. In most leeches there is a body iparenchyma, traversed by longi- n tudinal transverse and dorsoventral muscles in which the organs are immediatelj' imbedded (fig. 290). The alimentary tract is provided with paired diverticula (fig. 291), varying in number in different species. Between the
RMRGKFB5–. Bulletin - New York State Museum. Science. Fig. 35 Fig. 36 Fig. 35 Scliroederoceras cassinense Whitf. (sp.) Transverse section. Natural size Fig. 36 Schroederoceras cassinense Whitf. (sp.) Enlargement (x 5.4) of portion of longitudinal section, siiow- ing the structure of the siphuncle (siphuncular segments dotted) We have referred several specimens to this species rather than to S. eatoni on account of their straight sutures and the section of the ephebic volution, which possesses about equal transverse and dorsoventral diameters. In one specimen which we figure here the ventral and lateral
RMRHMKA3–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIGURE 3. Cross section through a retina selectively adapted vith flashes of polarized light whose e-vector orientation had been determined by monitoring the intracellularly recorded receptor potential. The plane of section coincides approximately with line 2 of Figure 2B. The proximal screening pigment appears in various elements of each ommatidium and is marked by the small arrows. The large arrows note the dorsoventral (D) axis and horizontal OH) axis of the eye. Each ommatidium shows a pigment free central area, the rha
RMRH3XYR–. Breviora. 14 BREVIORA No. 466 The snout color and symmetric body annuli of ruthveni make these animals easily distinguishable from the sympatric nelsoni. Similarly, the high number of annuli of celaenops and annulata are different from the usually few annuli of the ringed or saddled blairi form of alterna. In the other cases, some combination of color pattern with ventral scale number serves to diagnose members of the mexicana group. Skull Data from dorsoventral radiographs of similarly sized, adult alterna (N = 7) and mexicana (N = 12) were compared to quantify the observation of a more tri
RMRHM9NY–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. GILL MUSCLE PHARMACOLOGY AND ANATOMY 91. Figure 7. Thick 1100 ^m) cross section of a demibranch showing the distribution of muscle fibers and the SCP-like peptide YFAFPRQamide. The muscle fibers are stained with phalloidin and fluoresce green. Red fluorescence is associated with YFAFPRQamide and is concentrated in the tips of the filaments, but lesser amounts are also found on the abfrontal face of the filaments in the sublilamentar tissue. Abbreviations: bv = blood vessel; dvm = dorsoventral muscle; gf = gill filament; 1m =
RMRHE50W–. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. 170 L. M. Pessöa et al. the perspective of qualitative bacular traits. The morphological affinities of P. yonenagae will then be further evaluated from the viewpoint of quantitative cranial traits. The baculum in the subgenus Trinomys is an elongate and narrow structure with a straight shaft (fig. 1). In P albispinus, the baculum has a dorsoventral curvature and slightly tapered lateral indentations near the mid-shaft. The proximal end is paddle-shaped and pointed.
RMRG67F3–. Bulletin - United States National Museum. Science. 120 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. bearing the branchial aperture at the end. Atrial aperture but slightly prominent, situated some distance back on the dorsal border. Attachment by a large part of the left side. Test yellowish, very smooth and shiny externally (much more so than in Phallusia de- pressiuscula, just described), and of a glassy transparency and fairly firm consistency. Apertures lobed, but in their contracted state the lobes can not readily be counted. Length, 38 mm.; dorsoventral diameter, 25 mm.; thickness from
![. Bulletin - United States National Museum. Science. MOKOGRAPH Ol" THE EXISTING CKINOIDS. 163 In the proximal jiortion of the postradial series in certain large comatulids, especially in the genera Co-ma,<iter and Comatvla, there is a well-marked tendency for the synarthries to lose their normal joint face sculpture and either to become nearly plane through the almost complete suppression of the median dorsoventral ridge (part 1, fig. 36, p. 75) or to acquire irregularly meandering or concentric ridges similar to those seen be- tween the plates in many of the jf^ Flexibilia (part 1, fi Stock Photo](https://c8.alamy.com/comp/RG76J7/bulletin-united-states-national-museum-science-mokograph-olquot-the-existing-ckinoids-163-in-the-proximal-jiortion-of-the-postradial-series-in-certain-large-comatulids-especially-in-the-genera-co-maltiter-and-comatvla-there-is-a-well-marked-tendency-for-the-synarthries-to-lose-their-normal-joint-face-sculpture-and-either-to-become-nearly-plane-through-the-almost-complete-suppression-of-the-median-dorsoventral-ridge-part-1-fig-36-p-75-or-to-acquire-irregularly-meandering-or-concentric-ridges-similar-to-those-seen-be-tween-the-plates-in-many-of-the-jf-flexibilia-part-1-fi-RG76J7.jpg ". Bulletin - United States National Museum. Science. MOKOGRAPH Ol" THE EXISTING CKINOIDS. 163 In the proximal jiortion of the postradial series in certain large comatulids, especially in the genera Co-ma,<iter and Comatvla, there is a well-marked tendency for the synarthries to lose their normal joint face sculpture and either to become nearly plane through the almost complete suppression of the median dorsoventral ridge (part 1, fig. 36, p. 75) or to acquire irregularly meandering or concentric ridges similar to those seen be- tween the plates in many of the jf^ Flexibilia (part 1, fi Stock Photo")
RMRG76J7–. Bulletin - United States National Museum. Science. MOKOGRAPH Ol" THE EXISTING CKINOIDS. 163 In the proximal jiortion of the postradial series in certain large comatulids, especially in the genera Co-ma,<iter and Comatvla, there is a well-marked tendency for the synarthries to lose their normal joint face sculpture and either to become nearly plane through the almost complete suppression of the median dorsoventral ridge (part 1, fig. 36, p. 75) or to acquire irregularly meandering or concentric ridges similar to those seen be- tween the plates in many of the jf^ Flexibilia (part 1, fi
RMRN81GH–. Anatomy of the cat. Cats; Mammals. THE SKULL 2,2, the external auditory meatus is a nearly dorsoventral groove, which, when the bone is articulated, forms a part of the boundary of the stylomastoid foramen (Fig. 22, J); just ventrad of this groove is a pit (/•) which lodges the tip of the tympanohyal bone. Craniad the bone is produced into a short spine, the styli- form process (^7), which lies in a horizontal groove in the ventral surface of the basisphenoid. Laterad of this spine is a groove for the tuba auditiva or Eustachian tube. The medial surface (Fig. 24) presents in the middle near
RMRGKF5W–. Bulletin - New York State Museum. Science. 498 NEW YORK STATE MUSEUM depressed elliptic, the ratio of the dorsoventral diameter to the trans- verse one as 8 -.g in the earlier and later parts of the conch. The conch is strongly curved and may have approached the gyroceraconic condition; an inner arc of 50 mm has a hight of 8 mm. The living chamber attains apparently about one third the length of the total conch. The aperture is not contracted, the margin nearly straight. The growth lines indicate that the hyponomic sinus is shallow and situated on the arched external side (exogastric shell).
RMRHKMC6–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. SENESCENCE IN A COLONIAL ASCIDIAN 375. Figure 6. Further ultrastructural alterations in zooids at day 3 of nonrandom senescence, (a) Individual cell with prominent lipid inclusion found in blood space of /.ooid. Such cells are found randomly dispersed in blood and viscera throughout the dorsoventral plane of individual zooids. (b) Cross-section through the brush border of the gastric epithelium reveals fused microvilli. These cells do not yet display any disruption of the nuclear membrane, but some loss of cytoplasinic densi
RMRGJC49–. Bulletin of the British Museum (Natural History), Geology. 20 GAUDANT & QUAYLE Discussion. H. Woodward (1903) stated 'the bifid flagella of the inner antennae are preserved in fig. 1 and fig. 2'. These are possibly the inner and outer flagella while the shorter median one is hidden between them. In the new material this smaller flagellum is present on two specimens (In.61688, In.61764: Fig. 2A, B) which are preserved crushed in a dorsoventral position rather than in the more customary lateral attitude. It is possible that only specimens in the latter position were available to H. Woodwar
RMRH134M–. Bulletin. Science. 26 BULLETIN 69, UNITED STATES NATIONAL MUSEUM. Internal anatomy. Nervous system.—The lateral longitudinal nerves (fig. 18, I. n.) are large and well developed, located in the lateral portions of the segment inside the inner layer of longitudinal muscles. Musculature.—The longitudinal muscles (fig. 18) are arranged in numerous small bundles disposed in two layers close together, and a considerable distance from the surface of the segment. Dorsoventral fibers are numerous. Trans- verse fibers are compara- tively few, in relation with the outer and inner sides of the inner lo
RMRH555R–. Breviora. . Fig. 3. A series of sections, in a horizontal plane, of the region anterior to the left orbit, in dorsoventral order, to show the relations of the lacrimal duct to the surrounding bones. From the sectioned skull, X 3. The lacrimal duct is hatched. The duct is seen leaving the orbit in section A; by E it enters the narial area through a foramen in the septomaxilla, which forms posterior and medial walls to the naris. From B downward, the maxilla is seen to bound the lacrimal medially as well as laterally.. Please note that these images are extracted from scanned page images that m
RMRHE50G–. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. 172 L. M. Pessöa et al. The similarity in bacular morphology between P. yonenagae and these forms of P. iheringi is due to the presence of a dorsoventral curvature, the proximal end square or evenly round, and a lateral indentation in the shaft. The baculum of P. yonenagae is quite distinct in morphology from that of P. albispinus, whose bacular morph- ology is the most divergent amongst taxa in the subgenus Trinomys (fig. 1). The distinctiveness of bacular morpholo
RMRG67X2–. Bulletin - United States National Museum. Science. 182 BULLETIN 82, UNITED STATES NATIONAL MUSEUM. and part 1, fig. 32, p. 71) the course of the transverse ridge is oblique, normally making an angle of about 45° with the dorsoventral plane of the joint face, the interarticular ligament and the muscular fossae on one side of the median line con- sequently being crowded and those on the opposite side correspondingly ex- tended, and viewed dorsally the joint face is seen to cross the arm at more or less of an angle (typically about 45°) to the longitudinal axis. In an external dorsal view of a
RMRG8WT4–. Bulletin - United States National Museum. Science. A NEW WHALEBONE WHALE 43 Fourth Rib: The shaft (pi. 21, fig. 4) is thick, stout, flattened on the thoracic face proximally, but otherwise convex, and is turned abruptly downward below the angle. The concave ovoidal tubercular facet is larger than the up- turned knoblike capitulum and overhangs the external face of the shaft. The neck is rather short (distance between outer margin of capitulum and inner margin of tubercular facet, 35 mm.); the dorsoventral diameter of the neck is greater than its anteroposterior diameter. Fifth Rib: The shaif
RMRHMG1R–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FAST-STRIKE FEEDING week. With other animals, strikes could he obtained with some dependability. On one occasion, a response was ob- tained although the prey was not in contact with the oral region of Clione. In this case, the Limacina began rapid swimming movements when brought near the oral region of Clione, triggering an immediate fast-strike response. In all observed fast-strike responses, the initial response of the acquisition phase was rapid mouth opening. When closed, the mouth forms a dorsoventral slit on the anteri
RMRGKFDE–. Bulletin - New York State Museum. Science. BEEKMANTOWN AND CHAZY FORMATIONS OF CHAMPLAIN BASIN 467 dorsoventral diameter has become equal to the other one and the conch is subcircular in section. The sutures pass nearly straight transversely in both the nepionic and neanic stages, the lateral lobes being still undeveloped, and the ventral saddle very shallow. They begin, however, in the neanic stage to turn markedly forward near the line of involution, indicating the presence of a high dorsal saddle.. Fig. 26 Tarphyceras seelyi Whitf. (sp ) SLCtiop. showing- the living chamber. Natural size
RMRG67XR–. Bulletin - United States National Museum. Science. MONOGRAPH OF THE EXISTING CEINOIDS. 179 Muscular articulations are of two types—one in which the fulcral ridge runs across the joint face at right angles to the dorsoventral plane and the two halves of the ventral portion of the joint face on either side of the median line are alike and symmetrical, known as the straight muscular articulation (part 1, fig. 31, p. 71), and one in which the fulcral ridge is strongly diagonal, so that the two portions of the ventral surface on either side of the median line are very different in size and shape,
RMRG3HM3–. Camallanata of animals and man and diseases caused by them = Kamallanaty zhivotnykh i cheloveka i vyzyvaemye ime zabolevaniya. Helminths; Worms as carriers of disease. FIGURE 7. Camallanus lacustris (Zoega, 1776): a - fourth-stage larva, cephalic end, lateral; b - same, dorsoventral; ? - cephalic end of adult specimen from a perch, lateral; d - same, dorsoventral (after Campana-Rouget, 1961). 38 The third-stage larva is distinctly differentiated and resembles the adult. A distinct buccal capsule, rounded and not divided into valves, is present, but tridents are still absent. Vertical striae
RMRH47DC–. Breviora. 8 BREVIORA No. 332 effects of crushing and distortion have been eliminated. The skull roof is rather well preserved in MCZ 3614, but litde can be made of the palate. In contrast, the roof is not too good in MCZ 3615, but most of the palatal structure can be readily made out. MCZ 3615 has undergone strong lateral crushing. MCZ 3614, on the contrary, appears broad and relatively flat, so that dorsoventral crushing might be suspected. However, this is apparently not the case, for the braincase at the level of the parietal crest is as high in MCZ 3614 as in MCZ 3615. My figures are bas
RMRJ51WN–. The chordates. Chordata. Circulatory System 75. Fig. 75. Diagrams illustrating stages in the development of the systemic veins of the pig. The cardinal and omphalomesenteric veins are shown in black, the sub- cardinal system is stippled, the supracardinals are horizontally hatched, and vessels arising independently of these three systems are indicated by small crosses. [A) Ground plan of the veins of a young mammalian embryo. (B) Cross section (al level of arrow in A) showing dorsoventral relations of the various veins (C) dia- grammatic plot of veins of 5-6 mm. pig embryos. (D) Arrangement
RMRG3H63–. Camallanata of animals and man and diseases caused by them = Kamallanaty zhivotnykh i cheloveka i vyzyvaemye ime zabolevaniya. Helminths; Worms as carriers of disease. References: Skrjabin, Shikhobalova, Sobolev^ Paramonov, and Sudarikov, 1954, p. 29; Pearse, 1933, pp. 184-185. Camallanus tridentatus (Drasche, 1884) (Figure 40) Host: Arapaima gigas. Localization: intestine. Distribution: Brazil (Amazon Basin). Description (after Travassos, Artigas, and Pereira, 1928). Male not known.. FIGURE 40. Camallanus tridentatus (Drasche, 1884): a — cephalic end, lateral; b — same, dorsoventral (after
RMRHKTNN–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. R.subalar. FIGURE 5. Singing pauses induced by tapping on the animal's container. In A and B, the upper sets of records are the cessation and the lower sets the resumption of singing. The singing pause in each case was less than one second. 1969) with direct flight muscles being wing openers, indirect flight muscles prin- cipally wing closers, and the sound pulse being produced on the closing stroke of the wings. It is surprising that in A', robnstus the dorsal-longitudinal muscle is a synergist to the dorsoventral indirect
RMRGH31P–. Bulletin of the Department of Geology. Geology. 294 University of California Publications in Geology [Vol. 12 MEGALONYX?, sp. Material.—The phalanx of a ground-sloth, Univ. Calif. Coll. Vert. Pal. no. 23372 (figs. Id and le), Univ. Calif, loc. 3243. Measurements No. 23372 Greatest anteroposterior length 54.5 mm. Greatest dorsoventral depth of proximal end 36 Greatest transverse thickness at middle 33.5 The specimen (fig. 1) is of nearly bilateral symmetry; the proximal articulation consists of two vertical concavities separated by a median ridge, the upper and lower extremities of which are
RMRH46KY–. Breviora. 1972 TRIASSIC FISH FROM ARGENTINA 13 is limited to between 2 and 6 ridges that run concentrically along- the posterior and ventral borders of each scale. Ridge scales occur in front of the unpaired fins and also on the dorsal side of the body between the skull and the dorsal fin. Pseudoheaconia elegans Bordas, 1944 Figures 6-8 Pseudoheaconia elegans Bordas, 1944: 456, pi. 1. Diagnosis (eynended). Parietal just over half the length of the frontal. Opercular plate D-shaped, its anteroposterior length being oer half its dorsoventral length. 'entral edge of the opercular slightly con
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