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: Anatomy
Posterior relations of head of pancreas are all except - 
Select and explain. 
A. Common bile duct, B. First part of duodenum, C. Aorta, D. Inferior vena cava
B: First part of duodenum
Answer: B: First part of duodenum 
Explanation: First part of duodenum is anterior to head of pancreas.
IVC and common bile duct are posterior to head of pancreas.
Option C is tricky here. Aorta is posterior to uncinate process which in turn is a part of head of pancreas.