- Formed by the bifurcation of the Aorta on the body of L4
- To the left of midline
- Thus, Right Common Iliac Artery longer than the left
- Each passes to the front of the Sacroiliac Joint
- Bifurcation occurs into the External and Internal Iliac Arteries
- Ureter lies in front of this bifurcation or the very beginning of the External Iliac Artery
- Left Common Iliac Artery
- Crossed by the Inferior Mesenteric (Superior Rectal) Vessels lying beside the Ureter behind the Apex of the Mesocolon
- Each crossed by the Sympathetic contributions to the Superior hypogastric plexus