title: Action potential transforms and mechanisms of excitation-contraction coupling.
mesh_terms: D000200:Action Potentials; D000818:Animals; D001001:Anura; D002118:Calcium; D066298:In Vitro Techniques; D009119:Muscle Contraction; D012519:Sarcoplasmic Reticulum / Q000502:physiology; D015032:Zinc / Q000494:pharmacology
chemical_list: D015032:Zinc; D002118:Calcium