Sphincter of ampulla

Sphincter of ampulla
sphincter of ampulla
Gray1057.png
Interior of the descending portion of the duodenum, showing bile papilla.
Latin m. sphincter ampullae
MeSH Oddi's+Sphincter
Code TA A05.8.02.018

The sphincter of ampulla or sphincter of Oddi is a muscular valve that controls the flow of digestive juices (bile and pancreatic juice) through the ampulla of Vater into the second part of the duodenum. It is named after Ruggero Oddi.[1] The sphincter of Oddi is relaxed by the hormone Cholecystokinin (CCK) via vasoactive intestinal polypeptide (VIP).[2]

Clinical significance

Main article: sphincter of Oddi dysfunction

References

  1. ^ synd/2709 at Who Named It?
  2. ^ J Clin Invest. 1988 June; 81(6): 1920–1924.
  • Gray's Anatomy, 39th ed. p. 1228.

External links

Great In Depth Article On The Sphincter of Oddi Function: http://www.saudijgastro.com/article.asp?issn=1319-3767;year=2000;volume=6;issue=3;spage=129;epage=146;aulast=Ballal

v · d · eAnatomy of torso, digestive system: accessory digestive glands (TA A05.8–9, TH H3.04.05-07, GA 11.1188)
Liver

diaphragmatic surface: Bare area of the liver • Ligamentum venosum

visceral surface: Gastric impression • Duodenal impression • Colic impression • Renal impression • Suprarenal impression • Porta hepatis • Round ligament of liver

lobes: Left lobe  • Right lobe (Caudate lobe, Quadrate lobe)

Fibrous capsule of Glisson • Perisinusoidal space • Liver sinusoid • Periportal space • Portal triad • Lobules of liver

cells: Hepatocyte · Hepatic stellate cell · Kupffer cell
Biliary tract

intrahepatic (from Bile canaliculus and Canals of Hering): Interlobular bile ducts • Left hepatic duct • Right hepatic duct

extrahepatic: Common hepatic duct

by region: Body • Fundus • Neck

Cystic duct • Common bile duct

Hepatopancreatic ampulla (Sphincter of ampulla)

cells: Cholecystocyte
Pancreas

by region: Tail • Body • Neck • Head (Uncinate process)

ducts: Pancreatic duct • Accessory pancreatic duct

by function: Islets of Langerhans • Exocrine component of pancreas

cells: Centroacinar cell · Pancreatic stellate cell

M: DIG

anat(t, g, p)/phys/devp/enzy

noco/cong/tumr, sysi/epon

proc, drug(A2A/2B/3/4/5/6/7/14/16), blte



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Look at other dictionaries:

  • sphincter — A muscle that encircles a duct, tube, or orifice in such a way that its contraction constricts the lumen or orifice. SYN: musculus s. [TA], s. muscle [TA]. [G. sphinkter, a band or lace] s. of ampulla s. of hepatopancreatic ampulla. anatomic s.… …   Medical dictionary

  • 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 =… …   Wikipedia

  • Sphincter of Oddi — Infobox Anatomy Name = PAGENAME Latin = GraySubject = GrayPage = Caption = Interior of the descending portion of the duodenum, showing bile papilla. Caption2 = System = Precursor = MeshName = Oddi s+Sphincter MeshNumber =… …   Wikipedia

  • sphincter muscle of hepatopancreatic ampulla — musculus sphincter ampullae hepatopancreaticae …   Medical dictionary

  • sphincter of hepatopancreatic ampulla — musculus sphincter ampullae hepatopancreaticae …   Medical dictionary

  • sphincter of Oddi — noun A muscular valve that controls the flow of digestive juices (bile and pancreatic juice) through the ampulla of Vater into the second part of the duodenum …   Wiktionary

  • musculus sphincter ampullae hepatopancreaticae — [TA] sphincter of hepatopancreatic ampulla: muscle fibers investing the hepatopancreatic ampulla in the wall of the duodenum; called also Oddi muscle, sphincter of Oddi, and Glisson sphincter …   Medical dictionary

  • musculus sphincter ductus pancreatici — [TA] sphincter muscle of pancreatic duct: a sphincter that surrounds the pancreatic duct just above the hepatopancreatic ampulla. Called also pancreatic sphincter and sphincter of pancreatic duct …   Medical dictionary

  • Hyrtl sphincter — an incomplete band or thickening of the muscle fibers in the rectum about 10 cm above the anus in the upper part of the rectal ampulla; called also rectal s …   Medical dictionary

  • Common bile duct — Digestive system diagram showing the common bile duct Latin ductus choledochus Gray s …   Wikipedia

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