The lower esophageal sphincter.
D000818:Animals; D002766:Cholecystokinin / Q000502:physiology; D004931:Esophageal Achalasia / Q000503:physiopathology; D004943:Esophagogastric Junction / Q000502:physiology* / Q000503:physiopathology; D005755:Gastrins / Q000502:physiology; D005764:Gastroesophageal Reflux / Q000503:physiopathology; D005769:Gastrointestinal Motility; D006548:Hernia, Diaphragmatic / Q000503:physiopathology; D006801:Humans; D010418:Pentagastrin / Q000502:physiology; D011312:Pressure; D012633:Secretin / Q000502:physiology
D005755:Gastrins; D012633:Secretin; D002766:Cholecystokinin; D010418:Pentagastrin