title: Sodium ions affect adrenergic control of sinoatrial rate.
mesh_terms: D000109:Acetylcholine / Q000502:physiology*; D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D005260:Female; D006339:Heart Rate / Q000187:drug effects*; D066298:In Vitro Techniques; D008297:Male; D009638:Norepinephrine / Q000502:physiology*; D011817:Rabbits; D012849:Sinoatrial Node / Q000187:drug effects* / Q000502:physiology; D012964:Sodium / Q000494:pharmacology*
chemical_list: D012964:Sodium; D000109:Acetylcholine; D009638:Norepinephrine