Medical Subject Headings

Last uploaded: March 22, 2026
Id http://purl.bioontology.org/ontology/MESH/D049630
http://purl.bioontology.org/ontology/MESH/D049630
Preferred Name

Esophageal Sphincter, Lower

Definitions
The physiologic or functional barrier to GASTROESOPHAGEAL REFLUX at the esophagogastric junction. Sphincteric muscles remain tonically contracted during the resting state and form the high-pressure zone separating the lumen of the ESOPHAGUS from that of the STOMACH. (Haubrich et al, Bockus Gastroenterology, 5th ed., pp399, 415)
Synonyms
Sphincter, Gastroesophageal
Gastroesophageal Sphincter
Gastroesophageal Sphincters
Lower Esophageal Sphincter
Sphincter, Lower Esophageal
Type http://www.w3.org/2002/07/owl#Class
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