- Sphincter of Oddi
Name = PAGENAME
Caption = Interior of the descending portion of the duodenum, showing bile papilla.
MeshName = Oddi's+Sphincter
MeshNumber = A03.159.183.079.300.900.600
DorlandsPre = s_18
DorlandsSuf = 12748595
The Sphincter of Oddi, also called the hepatopancreatic sphincter or Glisson's sphincter, controls secretions from the
liver, pancreas, and gallbladderinto the duodenumof the small intestine. It is named after Ruggero Oddi. [WhoNamedIt|synd|2709]
It is a
sphinctermuscle located at the surface of the duodenum. It appears slightly distal to the joining of the common bile ductand pancreatic ductas they enter the descending duodenum and forms from the ampulla of Vater. Bileand pancreatic secretions enter the digestive system through this point. The opening on the inside of the descending duodenum after the sphincter of Oddi is called the major duodenal papilla(of Vater).
Endoscopic retrograde cholangiopancreatograms (ERCP's), which are radiographic examinations of the biliary system, often involve assessment of the bile ducts with a
esophagogastroduodenoscopyvia the sphincter of Oddi before the injection of iodinated contrast medium.
* [http://abdellab.sunderland.ac.uk/lectures/Parmacology/Pics/anatomy/BileAnat.jpgDiagram at sunderland.ac.uk]
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