This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Anatomy
Pancreatic duct joins Common Bile Duct and open into which part of duodenum? 
Select and explain. 
A. Superior, B. Ascending, C. Descending, D. Inferior
C: Descending
Answer: C: Descending 
Explanation: (C) Descending # Common bile duct & pancreatic duct enter the medial wall obliquely and usually unite to form the common hepatopancreatic ampulla.> Narrow distal end opens on the summit of the major duodenal papilla (ampulla of Vater), which is situated on the postero- medial wall of the second part or descending part of duodenum.