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The ampulla of Vater, hepatopancreatic ampulla or hepatopancreatic duct is the common duct that is usually formed by a union of the common bile duct and the pancreatic duct within the wall of the duodenum. This common duct usually features a dilation ("ampulla").
What is the function of the hepatopancreatic ampulla? The ampulla of Vater serves as a connection between areas of your digestive system. It acts as a reservoir for pancreatic juices and bile, enabling the release of these substances that help your body break down and absorb food.
The hepatopancreatic ampulla, also known as the ampulla of Vater, is a small spherical reservoir located at confluence of the common bile duct and pancreatic duct. It is found within the wall of the descending duodenum and terminates in its lumen a small elevation called the duodenal papilla.
The pancreatic duct runs the length of the pancreas and unites with the common bile duct, forming the hepatopancreatic ampulla of Vater. This structure then opens into the duodenum via the major duodenal papilla.
The main pancreatic duct travels within the entire parenchyma of the pancreas. The duct then joins the bile duct in a dilated space called the hepatopancreatic ampulla (ampulla of Vater) that then opens into descending part of the duodenum at the major duodenal papilla.
The second and smaller pancreatic duct, the accessory duct (duct of Santorini), runs from the pancreas directly into the duodenum, approximately 1 inch above the hepatopancreatic ampulla. When present, it is a persistent remnant of pancreatic development.
In the majority of people, the main pancreatic duct joins the bile duct to form the short hepatopancreatic ampulla in the head of the pancreas, which empties into the duodenum through the major duodenal papilla. We encountered a series of sphincters which control the outflow from the ducts.
The pancreatic duct is a duct lined by a single layer of columnar epithelial cells. It ends at the hepatopancreatic ampulla where it typically joins with the bile duct in a dilated space, deep to the major duodenal papilla.
These acinar cells secrete enzyme-rich pancreatic juice into tiny merging ducts that form two dominant ducts. The larger duct fuses with the common bile duct (carrying bile from the liver and gallbladder) just before entering the duodenum via a common opening (the hepatopancreatic ampulla).
These acinar cells secrete enzyme-rich pancreatic secretion into tiny merging ducts that form two dominant ducts. The larger duct fuses with the common bile duct (carrying bile from the liver and gallbladder) just before entering the duodenum via a common opening (the hepatopancreatic ampulla).