The relative refractory period of an axon coincides with the period of

A. increased K+ permeability of the cell.
B. increased K+ flux into the cell.
C. Na+ permeability that is greater than that during the depolarization phase.
D. Increased Na+ flux through K+ channels.
E. activation and inactivation of voltage-dependent Na+ channels.


Answer: A

Anatomy & Physiology

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