72 



ESSENTIALS OF ZOOLOGY 



artery rises from the systemic arch. It branches to the shoulder and 

 adjacent body wall and enters the arm as the brachial artery. 



The systemic arches from each side, after curving under the ali- 

 mentary canal, meet near the anterior end of the kidneys and fuse 

 into a single large artery, the dorsal aorta, which extends posteriorly. 

 At or just posterior to this meeting point, there arises from the aorta 



External carotid 



Pa I at in e 



Auricularis 



Cutaneous 

 Carotid oland 



Conus arteriosus 

 Pulmonary. 



Systemic arch 



Lateralis 

 Dorsa lis 



Ophihalmic 

 Cerebral 



Internal carotid 



Brachial 



Vertebral 



Hepatic 



Coetiaco.rn-esenteric 



.Left qastric 



PANCREAS 



IRiqht (gastric 

 C celiac 

 Anterior 

 mesenteric 



Splenic 



Recto.vesical 

 Sciitic 



/^ffl^^ZL-Posterior mesenteric 

 .''r^'-*\^Femora I 



Fig. 20. — Arteries of the bullfrog from ventral view. (Drawn by Ruth M. Sanders.) 



the large coeliaco-mes enteric artery which divides into an anterior 

 branch, the coeliac artery, and a posterior branch, the anterior mes- 

 enteric artery. The coeliac artery divides into right and left gastric 

 arteries. The latter runs directly to the dorsal or left side of the 

 stomach, while the former sends off small pancreatic arteries to the 

 pancreas; a larger hepatic artery to the pancreas, gall bladder, and 



