What are the names of the sphincters in the GI tract?
Esophageal Sphincter - a sphincter muscle at the upper or lower end of the esophagus. The lower esophageal sphincter is also called the cardiac sphincter because of its proximity to the heart.
Pyloric Sphincter - the circular muscle that separates the stomach from the small intestine and regulates the flow of partially digested food into the small intestine; also called pylorus or pyloric valve
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