ANATOMY OF THE FROG 



53 



Fig. 9. 



Diagram of the venous system of the Frog. The apex of the 

 heart is turned forwards to show the sinus venosus. z, 

 mandibular vein ; /, lingual vein ; //, internal jugular vein ; 

 S.sc, subscapular vein ; Br, brachial vein ; C. musculo- 

 cutaneous vein ; VCS, vena cava superior; VC /, inferior 

 vena cava ; H, hepatic veins ; f, femoral vein ; Sc, sciatic 

 vein; R A, renal portal vein; ilc, ram us communicans 

 iliacus; A A V^ anterior abdominal vein, formed by the 

 union of two pelvic veins ; P, portal vein. The pulmonary 

 circulation is not represented in the figure. 



