Abstract: I. A. iliaca communisThe abdominal aorta separates into the common iliac artery to each side usually at the level of the sixth lumbar vertebra. The common iliac artery frequently sends off the iliolumbar artery and usually passes in front of the lumboscral trunk and the obturator nerve.The iliolumbar artery separates into the lumbar and iliac branches, but in rare cases each of these branches may arise independently or be absent. IL A. iliaca externaThe common iliac artery separates into the external iliac artery and the internal iliac artery generally at the level of the promontorium. The external iliac artery descends to the vicinity of the arcus inguinalis where it divides into the inferior epigastrica artery, deep external pudendal artery and the deep circumflex iliac artery.The external iliac artery and the internal iliac artery are of about equal size.