Electrogenic Na pumping in the heart.
D000200:Action Potentials; D000818:Animals; D002642:Chick Embryo; D006321:Heart / Q000502:physiology; D006339:Heart Rate; D006801:Humans; D066298:In Vitro Techniques; D008564:Membrane Potentials; D009206:Myocardium / Q000378:metabolism*; D011188:Potassium / Q000378:metabolism; D011690:Purkinje Fibers / Q000502:physiology; D012849:Sinoatrial Node / Q000502:physiology; D012964:Sodium / Q000378:metabolism*
D012964:Sodium; D011188:Potassium