Circumflex iliac artery

Circumflex iliac artery

The Circumflex iliac artery (labeled as 'circumflex artery' at bottom left)

The Circumflex iliac artery is a significant artery in the human anatomy. It is a branch of the external iliac artery, which is located in the pelvic region.

Structure

The Circumflex iliac artery arises from the external iliac artery, just above the inguinal ligament. It curves forward in the subperitoneal tissue, and then ascends obliquely lateralward behind the inguinal ligament, contained in a fibrous sheath formed by the junction of the transversalis fascia and iliac fascia.

Function

The Circumflex iliac artery supplies blood to the iliac muscle and the overlying skin and subcutaneous tissue. It also provides a significant contribution to the collateral circulation in cases of aortic obstruction.

Clinical significance

Knowledge of the Circumflex iliac artery is crucial in surgical procedures involving the lower abdomen and pelvic region. Its injury can lead to significant bleeding and complications.

See also

• External iliac artery
• Inguinal ligament
• Iliac muscle