During an action potential, activation gates in voltage-gated Na⁺ channels close rapidly, but there is a delay in the reopening of their inactivation gates.This contributes to the A) decrease in K⁺ concentration. B) threshold. C) graded potential. D) refractory period. E) resting potential.

Question

Quizplus · Accepted Answer

The delay in the reopening of the inactivation gates of the voltage-gated Na+ channels contributes to the refractory period, during which the neuron is unable to generate another action potential in response to a stimulus. This prevents the action potential from reversing direction and allows for proper signaling in one direction along the axon.

During an Action Potential, Activation Gates in Voltage-Gated Na+ Channels

During an Action Potential, Activation Gates in Voltage-Gated Na⁺ Channels