sphincter of (common) bile duct
Definition: smooth muscle sphincter of the common bile duct immediately proximal to the hepatopancreatic ampulla and organized into a superior and inferior sphincter; it is this sphincter that controls the flow of bile into the duodenum.
Synonym(s): musculus sphincter ductus choledochiTA, musculus sphincter ductus biliaris, Boyden sphincter, choledochal sphincter, sphincter muscle of common bile duct
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