sphincter of (common) bile duct

sphinc·ter of (com·mon) bile duct

[TA]

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 choledochi [TA], musculus sphincter ductus biliaris ☆ , Boyden sphincter, choledochal sphincter, sphincter muscle of common bile duct