672 



THE VASCULAR SYS 



PLAN OF THE RELATIONS OF THE INTERNAL ILIAC ARTERY. 



In front. 



Peritoneum. 



Ureter. 



Outer side. 

 Psoas magnus. 



Behind. 



Internal iliac vein. 

 Lumbosacral cord. 

 Pyriformis muscle. 



Iliolumbar 



Gluteal. 



FIG. 473. Arteries of the pelvis. 



In the fetus the hypogastric artery is twice as large as the external iliac, and 

 appears to be the continuation of the common iliac. Instead of dipping into the 

 pelvis, it passes forward to the bladder, and ascends along the sides of that viscus 

 to its summit, to which it gives branches; it then passes upward along the back 

 part of the anterior wall of the abdomen to the umbilicus, converging toward 

 its fellow of the opposite side. Having passed through the umbilical opening, 



