title: Action potential and contraction of heart muscle.
mesh_terms: D000200:Action Potentials; D000818:Animals; D001001:Anura; D016275:Atrial Function; D001696:Biomechanical Phenomena; D002118:Calcium / Q000378:metabolism; D002463:Cell Membrane Permeability; D004285:Dogs; D006321:Heart / Q000502:physiology*; D006329:Heart Conduction System / Q000502:physiology; D008564:Membrane Potentials; D009119:Muscle Contraction; D009206:Myocardium / Q000378:metabolism; D011188:Potassium / Q000502:physiology; D013997:Time Factors; D016276:Ventricular Function
chemical_list: D011188:Potassium; D002118:Calcium