The Relative Refractory Period of an Axon Coincides with the Period

Multiple Choice

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

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