[Comparative study on the skeletal and cardiac muscles in repeated muscle contraction].
D000818:Animals; D001001:Anura; D002118:Calcium / Q000494:pharmacology; D004558:Electric Stimulation; D004594:Electrophysiology; D006321:Heart / Q000502:physiology*; D009119:Muscle Contraction / Q000502:physiology*; D009132:Muscles / Q000502:physiology*
D002118:Calcium