CLASS AMPHIBIA 



507 



Near the posterior end of the body cavity the dorsal aorta divides 

 into two iliac arteries going to the hind legs. Each of these gives 

 off (1) an epigastric artery suppljang the bladder and dorsal and 

 ventral body walls of the region, and (2) just below it, a femoral 

 artery passing to the body wall, skin, and proximal muscles of the 

 thigh. As the iliac artery enters the leg, a rectovesicular artery is sent 



Mandibular 



Brachial. 



Sinus 



venos 



Cardiac- 

 Hepatic. 



Cutanecus- 



!!^lnternal jut^ular 

 External juijular 



. Subscapular 



Innominate 





-Pre cava I 



Posterior 

 vena cava 



Soermatic 



Dorso. lumbar- 



LIVER 

 LOWER L^FT ;^^0;v^.^\ 



I.OBC .>-.V ^^^\ Hepatic 

 portal 



Gastric 



Splenic 

 /.Mesenteric 



SPLEEN 



Renal 



Renal portal. 

 Vesical 



External iliac 

 Fe moral - 



Fig. 276. — Veins of bullfrog from ventral view. (Drawn by Ruth M. Sanders.) 



off to the rectum, bladder, and skin on the dorsal surface of the 

 thigh. In the upper leg the continuation of the iliac, now called the 

 sciatic, gives off a branch to the right and to the left, supplying the 

 muscles, and then continues down the leg, sending off several branches 

 at the knee. 



The pulmo cutaneous arch takes blood to the respiratory organs: 

 the lungs, skin, and buccopharyngeal cavity. The pulmocutaneous 



