title: Esophageal contractions induced by vagal stimulation in the opossum.
mesh_terms: D000818:Animals; D001285:Atropine / Q000494:pharmacology; D004558:Electric Stimulation; D004947:Esophagus / Q000294:innervation / Q000502:physiology*; D006584:Hexamethonium Compounds / Q000494:pharmacology; D009119:Muscle Contraction; D009130:Muscle, Smooth / Q000502:physiology*; D009538:Nicotine / Q000494:pharmacology; D009893:Opossums; D010275:Parasympathetic Nervous System / Q000502:physiology; D013779:Tetrodotoxin / Q000494:pharmacology; D013997:Time Factors; D014630:Vagus Nerve / Q000502:physiology*
chemical_list: D006584:Hexamethonium Compounds; D013779:Tetrodotoxin; D009538:Nicotine; D001285:Atropine