title: The intrinsic control of myocardial contraction--ionic factors.
mesh_terms: D000200:Action Potentials; D000251:Adenosine Triphosphatases / Q000378:metabolism; D000818:Animals; D002118:Calcium / Q000378:metabolism / Q000502:physiology; D002395:Catecholamines / Q000378:metabolism / Q000502:physiology; D004071:Digitalis Glycosides / Q000494:pharmacology; D005110:Extracellular Space / Q000378:metabolism; D006321:Heart / Q000187:drug effects / Q000502:physiology*; D006801:Humans; D007477:Ions; D008564:Membrane Potentials; D009119:Muscle Contraction; D009206:Myocardium / Q000201:enzymology / Q000378:metabolism; D009210:Myofibrils / Q000378:metabolism; D011188:Potassium / Q000378:metabolism / Q000502:physiology; D011817:Rabbits; D051381:Rats; D012519:Sarcoplasmic Reticulum / Q000378:metabolism; D012964:Sodium / Q000502:physiology
chemical_list: D002395:Catecholamines; D004071:Digitalis Glycosides; D007477:Ions; D012964:Sodium; D000251:Adenosine Triphosphatases; D011188:Potassium; D002118:Calcium