pyloric sphincter


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pyloric sphincter

[pə′lȯr·ik ′sfiŋk·tər]
(anatomy)
The thickened ring of circular smooth muscle at the lower end of the pyloric canal of the stomach.
References in periodicals archive ?
This hormone acts by increasing the force of antrum contractions and the constriction of the pyloric sphincter; the overall effect of these actions being to reduce the speed of gastric emptying.
LAST Friday morning I woke with the words pyloric sphincter running through my mind, which is an odd thing to wake up with given that the last time it had any business cropping up in my thoughts was in 1967 whenI did my physiology O-level.