. Chordate morphology. Morphology (Animals); Chordata. dorsal oorta_. coeliaco-mesenteric artery A CRYPTOBRANCHUS B FROG Figure 11-13. Aortic arches of Cryptobranchus, A, and Rono, B, as seen in semidiagrommatic ventral view. Amphibians Among the amphibians bilateral arches are retained. A well-developed fifth arch is observed in Cryptobranchus (Fig- ure 11-13). Ventrally the sixth arch is small. It gives rise to the pulmonary artery, then, in most urodeles but not in the frogs, continues to the dorsal stem as the ductus arteriosus. The pulmonary artery bears a musculocutaneous branch. In Nect
. Chordate morphology. Morphology (Animals); Chordata. dorsal oorta_. coeliaco-mesenteric artery A CRYPTOBRANCHUS B FROG Figure 11-13. Aortic arches of Cryptobranchus, A, and Rono, B, as seen in semidiagrommatic ventral view. Amphibians Among the amphibians bilateral arches are retained. A well-developed fifth arch is observed in Cryptobranchus (Fig- ure 11-13). Ventrally the sixth arch is small. It gives rise to the pulmonary artery, then, in most urodeles but not in the frogs, continues to the dorsal stem as the ductus arteriosus. The pulmonary artery bears a musculocutaneous branch. In Necturus the first e-xternal gill is served by the third afferent arch; the efferent arch extends down and forward from the gill as the external carotid (Figure 11-14). Cryptobranchus is similar even though an external gill is lacking. Neither has a carotid body. The base of the sixth arch is lost in Necturus; the internal carotid. dorsal aorta ductus arteriosus ^ ~y^^ lung pulmonary vein external carotid internal gill ''ventral aorta A URODELA, LARVA ductus caroticus (when open) / ductus arteriosus. 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 Jollie, Malcolm. New York, Reinhold
Size: 2195px × 1138px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
