DISSECTING MANUAL. 



internal iliac in front of the lumbo-sacral joint, at the same time 

 giving off the external iliac. The right common iliac crosses 

 the inferior vena cava and common iliac veins. [841] 



Internal Iliac (hypogastric). Beginning at the lumbo-sacral 

 joint this descends into the pelvis and divides, usually at the 

 upper border of the great sciatic notch, into two divisions, an- 

 terior and posterior. Branches of posterior division. The ilio- 

 lumbar ascends over the pelvic brim to the iliac fossa, sending 

 a branch (lumbar) upward under the Psoas, and another 

 (spinal) to the spine. The lateral sacral are two branches (su- 

 perior and inferior) which descend on the front of the sacrum 

 and coccyx. The gluteal is a continuation of the posterior 

 division; it runs through the great sciatic foramen, just above 

 the Pyriformis, to the buttock where it divides into two 

 branches, superficial and deep. In the pelvis its branches are 

 muscular; neural, to the sacral plexus; and nutrient, to the 

 hip-bone. [848] 



Branches of Anterior Division. 



The vesical are the superior, middle, and inferior; they sup- 

 ply the upper part, back, and base of the bladder respectively, 

 The obliterated hypogastric is a fibrous cord which crosses the 

 pelvic wall under the vas deferens, or round ligament, and as- 

 cends on the abdominal wall, external to the urachus, toward 

 the umbilicus. The artery to the vas accompanies the vas 

 deferens. The middle hemorrhoidal supplies the rectum. The 

 vaginal supplies the walls of the vagina and corresponds to the 

 inferior vesical in the male. The uterine runs in the broad 

 ligament, crossing the ureter, to the neck of the uterus, then 

 ascends on the side of the body almost to the fundus, and then 

 runs outward under the Fallopian tube to join the ovarian 

 artery. [851] 



The obturator runs along the pelvic wall, just below the brim, 

 and through the obturator foramen, dividing into external and 

 internal branches which skirt round the margin of the fora- 



[210] 



