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 ?
Six2 activity is required for the formation of the mammalian pyloric sphincter.
There are cervical sphincters, urethral sphincters, pyloric sphincters, two separate and distinct anal sphincters, and the sphincter of Oddi, which controls secretions from the liver, pancreas, and gallbladder.