title: Mathematical relationship between automaticity of the sinus node and the AV junction.
mesh_terms: D000109:Acetylcholine / Q000494:pharmacology; D000771:Anesthesia, Intravenous; D000818:Animals; D006328:Cardiac Catheterization; D004285:Dogs; D004562:Electrocardiography; D006329:Heart Conduction System / Q000502:physiology*; D006339:Heart Rate / Q000187:drug effects; D008433:Mathematics; D008962:Models, Theoretical; D010424:Pentobarbital; D012849:Sinoatrial Node / Q000502:physiology*; D013903:Thoracic Surgery; D013909:Thorax / Q000601:surgery
chemical_list: D010424:Pentobarbital; D000109:Acetylcholine