The Reason That an Action Potential Is So Brief Is

question 72

Multiple Choice

The reason that an action potential is so brief is that

• A)a wave of repolarization immediately follows the rising portion of the spike.
• B)the closing of potassium gates allows the voltage difference across the neural membrane to be restored.
• C)the channels for sodium movement remain open.
• D)the sodium-potassium pump restores the electrical gradients.
• E)the membrane limits electrical activity.

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