When a membrane is in its refractory period, it is simply the downtime when another potential cannot be initiated. This is due to inactivated sodium channels.
What does it mean that a part of the membrane is refractory? Select all that apply.
A. It is insensitive to another depolarizing stimulus.
B. It means that voltage-gated K+ channels and voltage-gated Na+ channels are closed.
C. It is ready to have another action potential.
D. It means that Na+ is coming into the cell.
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