Regulation of transit through the esophagus.
D000818:Animals; D002799:Cholinergic Fibers / Q000502:physiology; D004947:Esophagus / Q000502:physiology*; D066298:In Vitro Techniques; D009119:Muscle Contraction; D009130:Muscle, Smooth / Q000502:physiology; D009893:Opossums; D010528:Peristalsis; D014630:Vagus Nerve / Q000502:physiology