VEINS. 



piniform) in the broad ligament from which two veins ascend 

 and, uniting later, end like the spermatic veins. [892] 



Common Iliac. Each commences at the pelvic brim, by the 

 union of the internal and external iliacs, ascends to the fifth 

 lumbar vertebra and unites with its fellow to form the inferior 

 vena cava. The right vein lies at first behind and then to the 

 outer side of its artery ; the left vein lies internal to its artery 

 and then under the right common iliac artery. They receive 

 the ilio-lumbar veins; the left common iliac receives the middle 

 sacral vein. [895] 



Internal Iliac. This is single and accompanies its artery. 

 Its tributaries are the obturator, internal pudic, sciatic, glu- 

 teal and lateral sacral venae comites, with vessels from the plex- 

 uses, and the middle hemorrhoidal, uterine, vaginal, and vesical 

 veins. Plexuses; the uterine lie along the lateral borders of 

 the uterus and give rise to (usually) two uterine veins on each 

 side; the vaginal lie at the sides of the vagina and give rise 

 to a single vaginal vein on each side; the superior vesical 

 occupies the sides and top of the bladder and empties into the 

 prostatico- vesical (inferior vesical, in the female) plexus; the 

 prostatico-vesical lies round the prostate and neck of the blad- 

 der and sends efferent branches on each side to the internal 

 iliac; the inferior vesical, representing the preceding in the 

 female, lies around the neck of the bladder and upper part of 

 the urethra. The deep dorsal vein of the penis runs in the mid- 

 line under the deep fascia and joins the prostatico-vesical 

 plexus; the dorsal vein of the clitoris has a similar course and 

 ends in the inferior vesical plexus. The superficial dorsal vein 

 of the penis divides to join the superficial external pudic 

 vein of each side. [895] 



External Iliac. Beginning under Poupart's ligament as a 

 continuation of the femoral this ascends to the pelvic brim, at 

 first internal to and then behind its artery, and joins the inter- 

 nal iliac. Its branches correspond to those of the artery and it 

 also receives the pubic branch of the obturator. [899] 



[213] 



