688 



THE BLOOD-VASCULAR SYSTEM 



The posterior tibial veins [vv. tibiales posteriores] drain the plantar venous 

 arch and the superficial rete (fig 542). 



They follow the posterior tibial artery up the leg, receiving tributaries corresponding to 

 its branches, the largest of which are the peroneal veins [vv. peronese]. They unite with the 

 anterior tibial venee comitantes at the lower border of the popUteus muscle. 



The anterior tibial veins [vv. tibiales anteriores] begin in the dorsal venous rete 

 and accompanj^ the anterior tibial artery up the leg receiving tributaries cor- 

 responding to branches of the artery. 



Fig. 541. — The Femoral Vein. (After Toldt, "Atlas of Human Anatomy," Rebman, London 



and New York.) 



Deep circumflex iliac artery and vein 



Pectineus 

 I Obturator vein 



I obturator externus 



Adductor minimus 



Fundiform ligament of penis 

 / 



'/1 



__.Inguinal 

 ring 



Tunica vaginalis 

 ^. propria testis 

 \ 

 Scrotum 



Deep femoral artery and vein 



They pass backward l)etwecn the interosseous mcml)rane and the tibia and fibula to unite 

 svith the posterior tiljial veins. Tlie posterior and anterior tibial veins unite at the lower 

 border of the popliteus inusclc to form the poi)Htcal vein. 



All these veins contain numerous valves, and communicate, by means of intermuscular 

 brannJies, with the suporlicial veins. 



Tlio popliteal vein [v. poplitea] (fig. 542), is formed by the confluence of the 

 voncc comitantes of the ant(Tior and posterior tibial arteries at the lower border 

 of the popliteus, and cxtcnids upward to the opening in the adductor magnus at 

 the junction of tiic middle and lower third of the thigii, where it changes its name 

 to femoral. 



