Which organ is supplied by both the superior mesenteric artery and the inferior mesenteric artery?

• A. Transverse Colon
• B. Descending Colon
• C. Sigmoid Colon
• D. Cecum

Answer: (A)

The transverse colon is supplied by both arteries because it sits at the transition between the midgut and hindgut regions. The superior mesenteric artery gives rise to the middle colic artery that supplies the transverse colon, while the inferior mesenteric artery provides the left colic artery that also contributes to the transverse colon via the marginal artery of Drummond. This creates a dual blood supply along the colon, with a notable watershed area at the splenic flexure where SMA and IMA territories meet. In contrast, the cecum and ascending colon are mainly supplied by the SMA, and the descending and sigmoid colon mainly by the IMA. Hence, the transverse colon is the organ receiving blood from both arteries.