Ampulla of Vater

Ampulla of Vater

Infobox Anatomy
Name = PAGENAME
Latin = a. hepatopancreatica
GraySubject = 250
GrayPage = 1199


Caption = Biliary system

| Width = 200px
Caption2 = The ampulla of Vater, seen on duodenoscopy at the time of ERCP
System =
Precursor =
MeshName = Ampulla+of+Vater
MeshNumber = A03.159.183.079.300.950
DorlandsPre = a_32
DorlandsSuf = 12127886

The ampulla of Vater ( _la. papilla Vateri, papilla duodeni major), also known as the _la. 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).

Function

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.

Related disorders

* 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.

Eponym

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. [WhoNamedIt|synd|3098]


=Additional

References

* "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


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Look at other dictionaries:

  • Ampulla of Vater — A small muscle located at the junction where of the common bile duct (from the liver and pancreas) empties into the duodenum (the upper part of the small intestine). Bile from the liver and secretions from the pancreas come through the ampulla of …   Medical dictionary

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  • ampulla of vater — ˈfätə(r), ȧt Usage: usually capitalized V Etymology: translation of German Vatersche ampulle, after Abraham Vater died 1751 German anatomist : a trumpet mouthed dilatation of the duodenal wall at the opening of the fused pancreatic and common… …   Useful english dictionary

  • ampulla of Vater — An enlargement of the ducts from the liver and pancreas at the point where they enter the small intestine …   English dictionary of cancer terms

  • Vater, ampulla of — A small muscle located at the junction where of the common bile duct (from the liver and pancreas) empties into the duodenum (the upper part of the small intestine). Bile from the liver and secretions from the pancreas come through the ampulla of …   Medical dictionary

  • Vater, papilla of — A small muscle located at the junction where of the common bile duct (from the liver and pancreas) empties into the duodenum (the upper part of the small intestine). Bile from the liver and secretions from the pancreas come through the papilla of …   Medical dictionary

  • ampulla — A saccular dilation of a canal or duct. [L. a two handled bottle] biliaropancreatic a. hepatopancreatic a.. a. biliaropancreatica hepatopancreatic a.. bony ampullae of semicircular canals [TA] a circumscribed dilation of one extremity of each of… …   Medical dictionary

  • vater's ampulla — noun Usage: usually capitalized V : ampulla of vater …   Useful english dictionary

  • ampulla — n.; pl. ampullae an enlarged or dilated ending of a tube or canal. The semicircular canals of the inner ear are expanded into ampullae at the point where they join the vestibule. The ampulla of Vater is the dilated part of the common bile duct… …   The new mediacal dictionary

  • Vater ampulla fold etc. — Va·ter ampulla, fold, etc. (fahґter) [Abraham Vater, German anatomist, 1684–1751] see under fold and see ampulla hepatopancreatica and papilla duodeni major …   Medical dictionary

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