The gastro-esophageal closing mechanism.
D003964:Diaphragm / Q000502:physiology; D004943:Esophagogastric Junction / Q000502:physiology*; D004947:Esophagus / Q000502:physiology; D005764:Gastroesophageal Reflux / Q000517:prevention & control*; D006801:Humans; D011187:Posture; D011312:Pressure