Which of the following statements about the refractory period of a membrane is TRUE?
A) The absolute refractory period refers to the period of time during which another action potential cannot be initiated in that part of the membrane that is undergoing an action potential, no matter how great the strength of the stimulus.
B) The relative refractory period refers to the period of time during which another action potential can be initiated in that part of the membrane that has just undergone an action potential if a stronger than normal stimulus is applied.
C) The refractory period prevents the action potential from spreading back over the part of the membrane that just underwent an action potential.
D) The refractory period places an upper limit on the frequency with which a nerve cell can conduct action potentials.
E) All of the above choices are correct.

Question

Quizplus · Accepted Answer

All of the statements provided in the answer choices are true. The refractory period is divided into two phases: absolute and relative. During the absolute refractory period, the membrane cannot be stimulated to initiate another action potential, regardless of the strength of the stimulus. During the relative refractory period, a stronger than normal stimulus can initiate another action potential. The refractory period prevents the action potential from spreading back over the part of the membrane that just underwent an action potential, and places an upper limit on the frequency with which a nerve cell can conduct action potentials.

Which of the Following Statements About the Refractory Period of a Membrane