Sigmoid artery

Sigmoid artery

File:Sigmoid arteries.png

Sigmoid arteries and their branches.

The Sigmoid artery is a branch of the inferior mesenteric artery that supplies the sigmoid colon in the human digestive system. It is a crucial component of the colonic blood supply.

Structure

The sigmoid artery typically arises from the inferior mesenteric artery, although variations in its origin are common. It travels towards the sigmoid colon, giving off several branches along its course. These branches anastomose with the superior mesenteric artery and the marginal artery of Drummond to form a continuous blood supply to the colon.

Function

The primary function of the sigmoid artery is to supply oxygenated blood to the sigmoid colon. This is essential for the normal functioning of the colon, including the absorption of water and electrolytes from the fecal matter.

Clinical significance

Due to its role in supplying the sigmoid colon, the sigmoid artery is often involved in conditions affecting this part of the digestive tract. For example, in diverticular disease, the sigmoid arteries may become compromised, leading to ischemia and potentially perforation of the colon.

See also

• Inferior mesenteric artery
• Sigmoid colon
• Human digestive system

External links

• Wikimedia Commons has media related to Sigmoid artery.