Arteries and Veins of the Ileum and Colon: A Detailed Overview
The ileum and colon are supplied by branches of the superior mesenteric artery and drained by branches of the superior mesenteric vein.
Arteries:
- Ileocolic artery:
- Gives rise to the posterior cecal artery, anterior cecal artery, and ileocolic branch.
- Right colic artery: Supplies the ascending colon and the proximal two-thirds of the transverse colon.
- Middle colic artery: Supplies the distal third of the transverse colon.
- Left colic artery: Goes down lateral to the descending colon and supplies the descending and sigmoid colon.
Veins:
- Ileocolic vein: Drains blood from the ileocolic junction and joins with the superior mesenteric vein.
- Right colic vein: Drains blood from the right colic flexure and the ascending colon.
- Middle colic vein: Drains blood from the transverse colon and right colic flexure.
- Left colic vein: Drains the blood from the left colic flexure, descending, and sigmoid colon.
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