title: The role of sodium ion in the regulation of myocardial contractility.
mesh_terms: D000251:Adenosine Triphosphatases / Q000378:metabolism; D000818:Animals; D001692:Biological Transport; D001696:Biomechanical Phenomena; D002118:Calcium / Q000502:physiology; D006321:Heart / Q000187:drug effects / Q000502:physiology*; D006706:Homeostasis; D008564:Membrane Potentials; D008974:Mollusca; D009206:Myocardium / Q000378:metabolism; D051381:Rats; D012964:Sodium / Q000378:metabolism / Q000502:physiology*
chemical_list: D012964:Sodium; D000251:Adenosine Triphosphatases; D002118:Calcium