This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen & Pelvis, Subject name: Anatomy
Inferior mesenteric vein drains into: 
Select and explain. 
A. Portal vein, B. Splenic vein, C. Superior mesenteric vein, D. Renal vein
B: Splenic vein
Answer: B: Splenic vein 
Explanation: Ans. B. Splenic veininferior mesenteric vein (IMV) is a blood vessel that drains blood from the large intestine. It usually terminates when reaching the splenic vein, which goes on to form the portal vein with the superior mesenteric vein.Tributaries of the inferior mesenteric vein drain the large intestine, sigmoid colon and rectum and include thea. left colic veinb. sigmoid veinsc. superior rectal veind. rectosigmoid veins