Definitions for "Pyloric sphincter"
(n) a sphincter muscle located between the stomach and the small intestines (duodenum) which acts as a valve to prevent the contents of the stomach from entering the small intestines until the proper time.
A sphincter of smooth muscle that regulates the passage of chyme from the stomach to the duodenum.
a thickened ring of smooth muscle through which the pylorus of the stomach communicates with the duodenum; also called the pyloric valve