This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
The water shed area in the marginal aery of Drummond is at 
Select and explain. 
A. Junction of proximal 2/3rd and distal 1/3' of transverse colon, B. Junction of Ascending and transverse colon, C. Splenic flexure, D. At rectosigmoid junction
C: Splenic flexure
Answer: C: Splenic flexure 
Explanation: Answer- C. Splenic flexureThe blood supply of colon is derived from the marginal aery of Drummond.It is a paracolic anastomotic aery formed by anastomosis between colic branches of superior mesentric aery ileocolic, right colic, middle colic) and colic branches of inferior muentetic aety (left colic and sigmoidal aeries),