sphincter muscle

Thesaurus

Noun

1.

sphincter muscle - a ring of muscle that contracts to close an opening anatomical sphincter, sphincter muscle, musculus - one of the contractile organs of the body physiological sphincter - a sphincter that is not recognizable at autopsy because its resting arrangement cannot be distinguished from adjacent tissue anal sphincter, musculus sphincter ani, sphincter ani - the sphincter muscle of the anus musculus sphincter urethrae, urethral sphincter - a striated sphincter muscle that constricts the urethra bladder sphincter, musculus sphincter vesicae - the sphincter muscle of the urinary bladder; made up of a thickened muscular layer of bladder around the urethral opening musculus sphincter ductus choledochi - the smooth muscle sphincter of the common bile duct musculus sphincter ductus pancreatici - the smooth muscle sphincter of the main pancreatic duct musculus sphincter pupillae, pupillary sphincter - a ring of smooth muscle surrounding the iris musculus sphincter pylori, pyloric sphincter, pyloric valve - the sphincter muscle of the pylorus that separates the stomach from the duodenum