The absolute refractory period of a region of neuron that has just undergone a d

Question

The absolute refractory period of a region of neuron that has just undergone a depolarization to a positive EM ( > 0) is caused by: a. the inactivation gate of the voltage-gated sodium plugging the ion channel and not being voltage sensitive b. the activation gate of the voltage-gated sodium being closed and not being voltage sensitive c. the inability of a neuron to conduct action potentials in both directions (unidirectional) O d the potassium leak channels being open allowing K to diffuse out of the cell making it more C: e Aliens from the planet refract

Explanation / Answer

The absolute refractory period is caused by inactivation of the voltage-gated sodium plugging ion channel and not being voltage sensitive that originally opened to depolarize the membrane.

Thus, the correct option is (a).   

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