Marginal artery of the colon

Marginal artery of the colon

The Marginal artery of the colon (also known as the marginal artery of Drummond and arteria marginalis coli) is a continuous arterial circle along the inner border of the colon. It is formed by the anastomosis of the terminal branches of the superior mesenteric artery and the inferior mesenteric artery. The marginal artery of the colon plays a crucial role in the blood supply to the colon.

Etymology

The term "marginal artery of the colon" is derived from its anatomical position along the inner margin of the colon. It is also named after Sir David Drummond, an eminent British anatomist and neurologist, who first described this artery.

Anatomy

The marginal artery of the colon runs parallel to the colon, from the ileocecal junction to the rectum. It is located in the mesocolon and is formed by the anastomosis of the terminal branches of the superior mesenteric artery and the inferior mesenteric artery. The artery is variable in its presence and caliber.

Clinical significance

The marginal artery of the colon is of clinical significance as it provides an important collateral circulation to the colon. This is particularly important in situations where the primary blood supply to the colon is compromised, such as in ischemic colitis or during surgical resection of the colon.

Related terms

• Anastomosis: The connection of separate parts of a branching system to form a network, as of leaf veins, blood vessels, or a river system.
• Superior mesenteric artery: A large artery that supplies blood to the small intestine, cecum, and colon.
• Inferior mesenteric artery: A major artery supplying blood to the large intestine.

See also

• Colon (anatomy)
• Arteries of the abdomen

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