The depolarization (rising phase) of the Action Potential is due to:

1.the influx of K+ from the ECF to the ICF.
2.the influx of Na+ from the ECF to the ICF.
3.the influx of Na+ through leak channels.
4.the movement of Na+ and of K+ by active transport.
5.None of these is correct.


2

Anatomy & Physiology

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