Veins of the Trunlv. 



463 



V. labialis 

 posterior 



M. transversus 



perinei 



superficialis 



v. pudenda' 

 interna. 



Yv. 



haemorrhoidales- . 

 inferiorc'S 



Anus with tlie 



veins of exit 



of the plexus 



liaemorrhoidal 1 s 



intern us 



Crus clitoridis 



V. dorsalis 

 clitoridis 



V. pudenda 

 interna 



Bulbus vestibul 



M. ischio- 

 cavernosus 



' ' " - V. profunda 

 ^^^^ clitoridis 



' V. urethralis 



V. bulbi vestibul 

 [vaginae] 



JI. glutaeus 

 maximus 



501. Veins of the female perineum (see iig. 474). 



A", iliaca COmillUllis (common iliac vein) (see Fig. 491)), paired, devoid of valves, 

 liebiud and to the right of the artery, arises from tlie V. hypogastrica and the Y. iliaca 

 externa. It frequently anastomoses with the v? lumbalis ascendens. Branch of the left vein : 



1. y. sacralis' media (middle sacral vein), unpaired, often double below, near the a. sa- 

 crahs media , forms with branches of the vv. sacrales laterales the flexus sacralis anteinoi' 

 (see p. 466) ; it is connected with the plexus haemorrhoidalis externus and vesiealis. 



T. hypOgastrica (hypogastric vein) (see Fig. 500) lies directly behmd thi' a. hypo- 

 gastrica. Its branches possess valves only outside the pelvis. Branches : 



V. pudenda interna (0. T. internal pudic vein) (see also F'igs. 500 and 503) begins 

 below the symphysis ussium ])ubis with an anastomosis from the v. dorsalis penis (cHtoridis) and 

 receives the vv. proftmdac penis (clitoi-idis), vv. urethrales, vv. bulbi urethrae (bulbi vestihdi 

 [vaginae], vv. scrotales (labiales) postcriores and vv. haemorrhoidales inferiores ; the latter 

 are connected with the plexus haemorrhoidales. AU the branches correspond to the arteries of 

 the same name. The vein is for the most part double and accompanies the artery. 



30* 



