title: Calcium and cardiac excitation-contraction coupling.
mesh_terms: D000200:Action Potentials; D000818:Animals; D001001:Anura; D002118:Calcium / Q000378:metabolism*; D002415:Cats; D004285:Dogs; D006168:Guinea Pigs; D006321:Heart / Q000502:physiology; D006801:Humans; D066298:In Vitro Techniques; D008954:Models, Biological; D009119:Muscle Contraction; D009132:Muscles / Q000502:physiology; D009200:Myocardial Contraction; D011817:Rabbits; D051381:Rats; D012508:Sarcolemma / Q000378:metabolism / Q000502:physiology; D012519:Sarcoplasmic Reticulum / Q000378:metabolism / Q000502:physiology; D012964:Sodium / Q000378:metabolism
chemical_list: D012964:Sodium; D002118:Calcium