Sphincter of Oddi

The Sphincter of Oddi (pronunciation: /sfɪŋktər ɒv ˈɒdi/) is a muscular valve that controls the flow of digestive juices (bile and pancreatic juice) to the first part of the small intestine (duodenum).

Etymology

The Sphincter of Oddi is named after Ruggero Oddi, an Italian anatomist who first described this structure in 1887.

Function

The Sphincter of Oddi regulates the introduction of bile and pancreatic secretions into the duodenum, and prevents the reflux of duodenal contents into the pancreatic duct.

Related Terms

Bile: A digestive fluid that is produced by the liver, stored in the gallbladder, and released into the duodenum.
Pancreatic juice: A liquid secreted by the pancreas, which contains a variety of enzymes, including trypsinogen, chymotrypsinogen, elastase, carboxypeptidase, pancreatic lipase, nucleases, and amylase.
Duodenum: The first part of the small intestine immediately beyond the stomach, leading to the jejunum.
Pancreatic duct: Duct that conveys pancreatic juice from the pancreas to the small intestine.
Ruggero Oddi: An Italian anatomist who first described the Sphincter of Oddi.

Disorders

Disorders of the Sphincter of Oddi include Sphincter of Oddi Dysfunction (SOD), a condition in which the sphincter does not relax at the appropriate time, leading to backup of pancreatic or bile fluids, which can cause severe abdominal pain.

External links

Medical encyclopedia article on Sphincter of Oddi
Wikipedia's article - Sphincter of Oddi

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Sphincter of Oddi