PATHOLOGY

Detailed explanation-1: -The ampulla of Vater, also known as the hepatopancreatic ampulla or the hepatopancreatic duct, is formed by the union of the pancreatic duct and the common bile duct. The ampulla is specifically located at the major duodenal papilla .

Detailed explanation-2: -The ventral duct persists as the main pancreatic duct (duct of Wirsung) which drains into the duodenum via the ampulla of Vater (major papilla).

Detailed explanation-3: -The common bile duct and the pancreatic duct coalesce into one duct at the level of the ampulla, before they open into the duodenum via a single orifice.

Detailed explanation-4: -A large main duct, the duct of Wirsung, collects pancreatic juice and empties into the duodenum. In many individuals a smaller duct (the duct of Santorini) also empties into the duodenum.

Detailed explanation-5: -The common bile duct passes through the pancreas before it empties into the first part of the small intestine (duodenum). The lower part of the common bile duct joins the pancreatic duct to form a channel called the ampulla of Vater or it may enter the duodenum directly.