PHYLUM CHORDATA 



421 



ptil.cuZr 



Fig. 253. — Rana temporaria. The arterial system, with the heart, lungs, kidneys, 

 and left testis, from the ventral aspect, car, carotid artery; car, gt, carotid 

 gland ; c. art, conus arteriosus; car. tr, carotid trunk : carl, mes, cccliaco- 

 mesenteric artery; c?e, cutaneous artery, d. ao, dorsal aorta; du, duodenal 

 artery; gs, gastric artery; ///, hepatic artery ; zl, iliac artery; int, intestinal 

 arteries; kd, kidney; I. an, left auricle; lg, lingual artery; pul, pulmonary 

 artery; pul. c?i. tr, pulmo-cutaneous trunk; r. an, right auricle; rn, renal 

 arteries; spl, splenic artery; sys. tr, systemic trunk; spin, spermatic artery ; 

 is, testis; v, ventricle. 



