title: The role of autonomic nervous system in the action of verapamil on the sinus node in man.
mesh_terms: D000328:Adult; D001285:Atropine / Q000494:pharmacology; D001341:Autonomic Nervous System / Q000187:drug effects*; D006801:Humans; D008297:Male; D011433:Propranolol / Q000494:pharmacology; D012849:Sinoatrial Node / Q000187:drug effects*; D013997:Time Factors; D014700:Verapamil / Q000494:pharmacology*
chemical_list: D001285:Atropine; D011433:Propranolol; D014700:Verapamil