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13 February, 00:18

Which of the following characteristics determines when the refractory period ends?

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  1. 13 February, 00:43
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    The correct answer for the question that is being presented above is this one: "D. how long it takes for the voltage-gated Na + channels to reactivate at the end of an action potential."

    Here are the following choices:

    A. how low the membrane potential drops below resting potential during the undershoot phase

    B. how long it takes for the voltage-gated Na + channels to close at the end of an action potential

    C. how long it takes for the voltage-gated K + channels to close during the undershoot phase

    D. how long it takes for the voltage-gated Na + channels to reactivate at the end of an action potential

    E. how long it takes for the membrane potential to return to resting potential after the undershoot phase
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