-
nouna ring of muscle that contracts to close an opening
Similar:
Definition that contains sphincter
- piles venous swelling external or internal to the anal sphincter
- hemorrhoid venous swelling external or internal to the anal sphincter
- haemorrhoid venous swelling external or internal to the anal sphincter
- light reflex reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller
- musculus sphincter ductus choledochi the smooth muscle sphincter of the common bile duct
- myosis reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller
- urethral sphincter a striated sphincter muscle that constricts the urethra
- musculus sphincter vesicae the sphincter muscle of the urinary bladder; made up of a thickened muscular layer of bladder around the urethral opening
- bladder sphincter the sphincter muscle of the urinary bladder; made up of a thickened muscular layer of bladder around the urethral opening
- pyloric stenosis narrowing of the pyloric sphincter that blocks the passage of food from the stomach into the duodenum