Anatomy General 336276a6 The minor duodenal papilla is opening of - A Hepatic duct B Hepatopancreatic ampulla C Accessory pancreatic duct D Bile duct High-Yield Explanation Major duodenal papilla → Hepatopancreatic ampulla (opening of the biliary-pancreatic duct). Minor duodenal papilla → Accessory pancreatic duct opening.