part of part of duct common bile duct bile duct hepatopancreatic ampulla A dilation of the duodenal papilla that is the opening of the juncture of the common bile duct and the main pancreatic duct. Ampulla formed by the union of the pancreatic duct and the common bile duct where they enter the intestine.[TAO] CALOHA:TS-2348 FMA:15076 GAID:283 MESH:A03.159.183.079.300.900 TAO:0005167 UBERON:0004913 UMLS:C0042425 Vater's ampulla ZFA:0005167 ampulla Vaterii ampulla biliaropancreatica ampulla hepatopancreatica ampulla of Vater ampulla of bile duct biliaropancreatic ampulla galen:AmpullaOfVater papilla Vateri papilla duodeni major uberon duodenal papilla