Relevant Competitive Tests:
The absolute refractory period of an action potential is due to _______________?
A.\tInsufficient neurotransmitter
B.\tDepletion of intracellular Na+
C.\tInactivation of Na+ k+ ATPase
D.\tVoltage inactivation of the Na+ channelCorrect Answer
Correct Option: D.\tVoltage inactivation of the Na+ channel
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