Which of the Following Statements Concerning the Absolute Refractory Period

question 49

Multiple Choice

Which of the following statements concerning the absolute refractory period is NOT accurate?

• A)The absolute refractory period refers to the period of time during which another action potential cannot be initiated in a patch of membrane that has just undergone an action potential, no matter how strong the stimulus.
• B)The absolute refractory period corresponds to the time period during which the Na⁺ gates are first opened and then closed and inactivated.
• C) Immediately following the absolute refractory period, the patch of nerve fibre membrane that has just undergone an action potential can be restimulated only by a stronger stimulus than is usually necessary.
• D) The absolute refractory period occurs during the after hyperpolarization phase of the action potential.

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