At the End of the Rising Phase of an Action

question 126

Multiple Choice

At the end of the rising phase of an action potential,

• A) a vast majority of the voltage-gated sodium channels begin to close.
• B) the membrane potential shifts back toward the resting membrane potential.
• C) the voltage-gated sodium channels enter a refractory period.
• D) many more potassium channels begin to close.
• E) a, b, and c

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