Voltage-sensitive sodium channels are active:
A)whenever the cell membrane starts to depolarize.
B)when the voltage across the membrane reaches zero.
C)when the threshold voltage of the cell is reached.
D)when the voltage across the membrane reaches +30 mV.

Question

Quizplus · Accepted Answer

Voltage-sensitive sodium channels open when the membrane potential reaches a specific threshold voltage, typically around -55 mV, initiating an action potential.

Voltage-Sensitive Sodium Channels Are Active