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Related to Esophageal sphincter, lower: Upper esophageal sphincter
The orifice where the esophagus enters the stomach.
The large, blind diverticulum of the stomach adjoining the orifice.
Anterior enlargement of the ventriculus in some insects.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.