Ampulla of Vater
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Ampulla of Vater
The ampulla of Vater (Latin: papilla Vateri, papilla duodeni major), also known as the hepatopancreatic ampulla, is formed by the union of the pancreatic duct and the common bile duct. The ampulla is specifically located at the major duodenal papilla.
One important thing to note about the Ampulla of Vater is that its entrance point, halfway along the second part of the duodenum, marks the anatomical transition from foregut to midgut (and hence the point where the celiac trunk stops supplying the gut and the superior mesenteric artery takes over).
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Various smooth muscle sphincters regulate the flow of bile and pancreatic juice through the ampulla: the sphincter of the pancreatic duct, the sphincter of the bile duct, and the hepatopancreatic sphincter (Sphincter of Oddi).
The Sphincter of Oddi controls the introduction of bile and pancreatic secretions into the duodenum, as well as preventing the entry of duodenal contents into the Ampulla.
Pancreatitis can result from a failure of pancreatic secretions to drain properly. One possible cause of impaired drainage of pancreatic juice is blockage of the hepatopancreatic ampulla. A common culprit to cause blockage is a gallstone in the common bile duct.
The eponymical term "ampulla of Vater" is named after Abraham Vater (1684-1751), a German anatomist who first published a description of it in 1720.
The pancreatic duct.
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"Ampulla, hepatopancreatic." Stedman's Medical Dictionary, 27th ed. (2000). ISBN 0-683-40007-X
Moore, Keith L. and Arthur F. Dalley. Clinically Oriented Anatomy, 4th ed. (1999). ISBN 0-683-06141-0
v • d • eAnatomy of torso, digestive system: accessory digestive glands
by region: Left lobe (Caudate lobe, Quadrate lobe) • Right lobe • Transverse fissure of liver • Bare area of the liverby function: Fibrous capsule of Glisson • Hepatocyte • Space of Disse • Space of Mall • Kupffer cell • Liver sinusoid • Ito cell • Hepatic lobule
intrahepatic: Bile canaliculus • Canals of Hering • Interlobular bile ducts • Intrahepatic bile ducts • Left and Right hepatic ductsextrahepatic: Common hepatic duct • Cystic duct • Common bile duct
by region: Body • Fundus • Neck
by region: Tail • Body • Neck • Head • Uncinate process
by function: Islets of Langerhans • Exocrine pancreasducts: Pancreatic duct • Accessory pancreatic duct
Hepatopancreatic ampulla • Sphincter of Oddi
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Categories: Abdomen Digestive system
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