title: Negative and positive inotropic responses of the blood-perfused canine papillary muscle to acetylcholine.
mesh_terms: D000109:Acetylcholine / Q000008:administration & dosage*; D000319:Adrenergic beta-Antagonists / Q000494:pharmacology; D000605:Amino Alcohols / Q000494:pharmacology; D000818:Animals; D001158:Arteries / Q000187:drug effects; D001285:Atropine / Q000494:pharmacology; D004285:Dogs; D006584:Hexamethonium Compounds / Q000494:pharmacology; D066298:In Vitro Techniques; D009119:Muscle Contraction / Q000187:drug effects*; D009132:Muscles / Q000187:drug effects*; D009638:Norepinephrine / Q000494:pharmacology; D010210:Papillary Muscles / Q000187:drug effects; D010477:Perfusion; D010636:Phenols / Q000494:pharmacology; D011433:Propranolol / Q000494:pharmacology; D000644:Quaternary Ammonium Compounds / Q000494:pharmacology; D013779:Tetrodotoxin / Q000494:pharmacology
chemical_list: D000319:Adrenergic beta-Antagonists; D000605:Amino Alcohols; D006584:Hexamethonium Compounds; D010636:Phenols; D000644:Quaternary Ammonium Compounds; D013779:Tetrodotoxin; D001285:Atropine; D011433:Propranolol; D000109:Acetylcholine; D009638:Norepinephrine