Cholinergic mechanisms in the sinus node with particular reference to the actions of hemicholinium.
D000109:Acetylcholine / Q000494:pharmacology*; D000818:Animals; D001285:Atropine / Q000494:pharmacology; D004285:Dogs; D004562:Electrocardiography; D005730:Ganglionic Blockers / Q000494:pharmacology*; D006329:Heart Conduction System / Q000187:drug effects*; D006339:Heart Rate; D009638:Norepinephrine / Q000494:pharmacology; D010477:Perfusion; D010830:Physostigmine / Q000494:pharmacology*; D012849:Sinoatrial Node / Q000187:drug effects
D005730:Ganglionic Blockers; D001285:Atropine; D010830:Physostigmine; D000109:Acetylcholine; D009638:Norepinephrine