Which artery supplies the left transverse colon, descending colon, upper rectum and sigmoid colon?

Which artery supplies the left transverse colon, descending colon, upper rectum and sigmoid colon?

• A. Superior Mesenteric Artery
• B. Inferior Mesenteric Artery
• C. Celiac Trunk
• D. Hepatic Artery

Answer: (B)

The sections described—the left transverse colon, descending colon, upper rectum, and sigmoid colon—are supplied by the hindgut arteries, all stemming from the inferior mesenteric artery. The left colic artery (branch of the inferior mesenteric) serves the descending colon and part of the transverse colon, while the sigmoid arteries supply the sigmoid colon, and the superior rectal artery supplies the upper rectum. Although the middle colic artery from the superior mesenteric artery can contribute collateral flow to the distal transverse colon, the primary arterial source for these specific regions is the inferior mesenteric artery. The other options refer to vessels that supply the foregut or midgut regions, not these hindgut areas.

The sections described—the left transverse colon, descending colon, upper rectum, and sigmoid colon—are supplied by the hindgut arteries, all stemming from the inferior mesenteric artery. The left colic artery (branch of the inferior mesenteric) serves the descending colon and part of the transverse colon, while the sigmoid arteries supply the sigmoid colon, and the superior rectal artery supplies the upper rectum. Although the middle colic artery from the superior mesenteric artery can contribute collateral flow to the distal transverse colon, the primary arterial source for these specific regions is the inferior mesenteric artery. The other options refer to vessels that supply the foregut or midgut regions, not these hindgut areas.