title: Ionic pathways and intracellular potential.
mesh_terms: D000818:Animals; D002415:Cats; D004285:Dogs; D006321:Heart / Q000502:physiology*; D006329:Heart Conduction System / Q000502:physiology; D008564:Membrane Potentials; D008839:Microelectrodes; D009206:Myocardium / Q000378:metabolism*; D010138:Pacemaker, Artificial; D012756:Sheep; D012849:Sinoatrial Node / Q000502:physiology; D012964:Sodium / Q000378:metabolism*
chemical_list: D012964:Sodium