XIII 



PHYLUM CHORDA TA 



375 



e.c 



FIG. 985. C dumb a liyia. The heart and chief blood-vessels, ventral aspect" 3 a. ao. arch of 

 aorta ; a. m. a. anterior mesenteric artery ; a. r. r. afferent renal veins ; a. r. v'. vein bringing 

 blood from pelvis into renal portal system ; 'jr. a. brachial artery ; br. v. brachial vein ; 

 c. caudal artery and vein ; c. c. common carotid artery ; c. in. v. coccygeo-mesenteric vein, dis- 

 placed to the right ; cce. a. eoeliac artery ; d. ao. dorsal aorta ; e. c. external carotid artery ; 

 upg. epigastric vein ; e. r. v. efferent renal vein ; /. a. femoral artery ; /. v. femoral vein ; h. r. 

 hepatic vein ; i. c. internal carotid artery ; i. il. internal iliac artery and vein ; i. m. internal 

 mammary artery and vein ; in. a. innominate artery ; i. v. iliac vein ; ju. jugular vein ; ju'. 

 anastomosis of jugular veins ; I. au left auricle ; I. p. a. left pulmonary artery ; I. pre. left 

 pre-caval vein ; I. vn. left ventricle ; pc. left pectoral arteries and veins ; pc. a. right pectoral 

 artery ; pc. v. right pectoral vein ; p. m. a. posterior mesenteric artery ; ptc. post-caval vein ; 

 ra. 2, ra. 2, ra. 3, renal arteries ; r. au. right auricle ; r. p. v. renal portal vein, on the left 

 side of the figure, supposed to be dissected so as to show its passage through the right kidney ; 

 r. p. a. right pulmonary artery ; r. pr. v. right pre-caval vein ; r. v. renal vein ; r. vn. right 

 ventricle ; sc. a. sciatic artery ; sc. v. sciatic vein ; scl. a. subclavian artery ; vr. vertebral 

 artery and vein. (From Parker's Zootomv.) 



