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Common Iliac Artery
Cardiovascular System

Common Iliac Artery

Arteria iliaca communis

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Quick Facts

Origin: Abdominal aorta.

Course: Descends in a lateral direction.

Branches: Ureteric branch, internal iliac, and external iliac arteries.

Supplied Structures: Pelvic cavity, perineum, and lower limbs.

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The common iliac arteries arise on the body of the fourth lumbar vertebra as the terminal branches of the abdominal aorta.


The common iliac arteries extend in an inferolateral direction as far as the sacroiliac joint, where they bifurcate into internal and external iliac arteries.


A ureteric branch arises from the common iliac artery where the ureter crosses anterior to the artery near its terminal bifurcation.

The internal iliac artery crosses the pelvic brim and enters the pelvic cavity. The external iliac artery continues inferiorly along psoas major as it travels towards the lower limb.

Supplied Structures

The ureteric branch contributes to the supply of the ureter. The internal iliac artery supplies the pelvic cavity and gluteal region. The external iliac artery supplies the lower limb.

Learn more about this topic from other Elsevier products

Common Iliac Artery

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The use of common iliac artery prevents a complete occlusion of the aorta, which is associated with temporary acidosis of both lower extremities.

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