This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen and pelvis, Subject name: Anatomy
Poal vein is formed 
Select and explain. 
A. Behind the spleen, B. Behind the tail of pancreas, C. Behind the neck of pancreas, D. Behind the second pa of duodenum
C: Behind the neck of pancreas
Answer: C: Behind the neck of pancreas 
Explanation: Poal vein is formed behind the neck of pancreas where the splenic vein and superior mesentric vein terminates and continue as poal vein. Ref: Human anatomy, 7th edition, BD Chaurasia, pg:328