The refractory period of an excitable membrane refers to the period of time during which no stimulus,however strong,will elicit a second action potential in the membrane.

Question

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The refractory period includes both the absolute refractory period, where no stimulus can elicit another action potential, and the relative refractory period, where a stronger-than-normal stimulus can elicit a second action potential.

The Refractory Period of an Excitable Membrane Refers to the Period