Term Name:	gastroesophageal sphincter
Synonyms:	cardiac sphincter, constrictor cardiae, esophageal sphincter, esophageal sphincter%2c lower, esophageal-cardiac junction, esophagogastric junction, gastro-esophageal junction, gastro-esophageal sphincter, gastro-oesophageal junction, gastroesophageal junction, gastroesophageal sphincter, gastroesophageal sphincter muscle, inferior esophageal sphincter, LES, lower esophageal sphincter
Definition:	the thick circular layer of smooth gastric musculature encircling the gastroesophageal junction that functions to reduce backflow into the esophagus from the stomach
Ontology:	Cell Ontology [UBERON:0004550]