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30 March, 09:48

Voltage-gated potassium channels are important for which phase of an action potential?

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  1. 30 March, 12:16
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    The repolarization or falling phase

    Explanation:

    The repolarization or falling phase is caused by the slow closing of sodium channels and the opening of voltage-gated potassium channels. As a result, the membrane permeability to sodium declines to resting levels. As the sodium ion entry declines, the slow voltage-gated potassium channels open and potassium ions rush out of the cell. This expulsion acts to restore the localized negative membrane potential of the cell.
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