Nature of myocardial contraction and of action potentials; importance of the cationic gradient.
D000200:Action Potentials; D002118:Calcium / Q000378:metabolism*; D002412:Cations; D006321:Heart / Q000502:physiology*; D006801:Humans; D008274:Magnesium / Q000378:metabolism*; D009200:Myocardial Contraction; D011188:Potassium / Q000378:metabolism*; D012964:Sodium / Q000378:metabolism*; D012982:Sodium, Dietary; D014882:Water-Electrolyte Balance
D002412:Cations; D012982:Sodium, Dietary; D012964:Sodium; D008274:Magnesium; D011188:Potassium; D002118:Calcium
CALCIUM/metabolism; HEART/physiology; MAGNESIUM/metabolism; POTASSIUM/metabolism; SODIUM/metabolism