An action potential does not re-stimulate the adjacent membrane that was previously depolarized because
A)stimulation is inhibited by the myelin sheath.
B)it is impossible for an action potential to be propagated along an axon toward the nerve cell body.
C)the resting membrane potential of the axon is too positive.
D)the resting membrane potential of the axon is too negative.
E)that area of the membrane is in the absolutely refractory period.

Question

An action potential does not re-stimulate the adjacent membrane that was previously depolarized because
A)stimulation is inhibited by the myelin sheath.
B)it is impossible for an action potential to be propagated along an axon toward the nerve cell body.
C)the resting membrane potential of the axon is too positive.
D)the resting membrane potential of the axon is too negative.
E)that area of the membrane is in the absolutely refractory period.

Quizplus · Accepted Answer

During the absolute refractory period, which occurs immediately after an action potential, the membrane is unable to respond to any further stimulation. This is because the voltage-gated sodium channels are inactivated and cannot be reopened until the membrane potential returns to its resting state. Therefore, re-stimulation of the adjacent membrane that was previously depolarized cannot occur during this period.

An Action Potential Does Not Re-Stimulate the Adjacent Membrane That