What is the sphincter of Oddi? What is the ileocecal sphincter?
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Sphincter of Oddi. The sphincter of Oddi (or sphincter of ampulla) is a complex of four smooth muscle sphincters within the duodenal wall. It surrounds, and helps fix to the duodenum, the duct of Wirsung, common bile duct and the ampulla of Vater 1-2.
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