Download Branches of Internal Iliac Artery Posterior Division iliolumbar lateral

Branches of Internal Iliac Artery
Posterior Division
1. iliolumbar
2. lateral sacral
3. superior gluteal
a. largest branch of the internal iliac.
b. usually passes between the lumbosacral trunk and the first sacral nerve to
leave the pelvis through the greater sciatic foramen above the piriformis.
Anterior Division
1. inferior gluteal
a. passes between the 2nd and 3rd sacral nerves to descend between the
piriformis and coccygeus muscles through the lower part of the greater sciatic
foramen.
2. middle rectal
3. uterine (females only)
4. obturator
5. inferior vesical
6. superior vesical
7. obliterated umbilical (= medial umbilical ligament; no longer a patent vessel)
8. internal pudendal
a. leaves the pelvis through the greater sciatic foramen, enters the gluteal region,
then passes through the lesser sciatic foramen to enter the perineum