Calcium fluxes in frog heart ventricles
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Calcium fluxes in frog heart ventricles are determined both during quiescence and during periods of activity. The two main results: (a) calcium influx is much increased by activity; (b) a net release of calcium from the cells occurs immediately after activity, in parallel with, and probably related to, the decline in tension of the downward “staircase”.
Key-WordsCalcium Fluxes Heart Muscle
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