title: Ionic mechanisms of rhythmic firing.
mesh_terms: D000200:Action Potentials; D000818:Animals; D002118:Calcium / Q000502:physiology; D006329:Heart Conduction System / Q000502:physiology*; D008564:Membrane Potentials; D009474:Neurons / Q000502:physiology; D011188:Potassium / Q000502:physiology*; D011690:Purkinje Fibers / Q000502:physiology; D012849:Sinoatrial Node / Q000502:physiology; D012964:Sodium / Q000502:physiology*
chemical_list: D012964:Sodium; D011188:Potassium; D002118:Calcium