ANATOMY OF THE FROG 



53 



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Fig. 9. 



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

 heart is turned forward to show the sinus venosus. M, 

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

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

 cutaneous vein ; I'CS, vena cava superior ; I'C /, inferior 

 vena cava ; //, hepatic veins ; F, femoral vein ; Sc, sciatic 

 vein ; A' A, renal portal vein ; ilc, ramus communicans 

 iliacus ; A A I', anterior abdominal vein, formed^ by the 

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

 circulation is not represented in the figure. 



