title: Two roles of calcium during the spike in circular muscle of small intestine in cat.
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D001464:Barium / Q000494:pharmacology; D002118:Calcium / Q000378:metabolism*; D002415:Cats; D004553:Electric Conductivity; D007421:Intestine, Small / Q000502:physiology*; D008345:Manganese / Q000494:pharmacology; D009130:Muscle, Smooth / Q000502:physiology*; D012964:Sodium / Q000494:pharmacology; D013757:Tetraethylammonium Compounds / Q000494:pharmacology
chemical_list: D013757:Tetraethylammonium Compounds; D001464:Barium; D008345:Manganese; D012964:Sodium; D002118:Calcium