musculus sphincter ductus choledochi

English Thesaurus

1. the smooth muscle sphincter of the common bile duct (noun.body)

hypernym	:	anatomical sphincter, sphincter, sphincter muscle,
definition	:	a ring of muscle that contracts to close an opening (noun.body)

part meronym	:	bile duct, common bile duct,
definition	:	a duct formed by the hepatic and cystic ducts; opens into the duodenum (noun.body)