During the Action Potential, the Neuron Cannot Be Excited by a Second

question 28

Multiple Choice

During the action potential, the neuron cannot be excited by a second stimulus; it is _______. For a few milliseconds afterward, the hyperpolarized neuron is _______, requiring a stronger stimulation than usual in order to fire.

• A) hyperpolarized refractory; relatively refractory
• B) hyperpolarized; absolutely refractory
• C) relatively refractory; hyperpolarized
• D) absolutely refractory; relatively refractory

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