Video from Nonstop Neuron on YouTube

5.9.1 Distinguish the absolute and relative refractory periods and explain their ionic basis.

Why this video

It explains the distinction between the absolute and relative refractory periods alongside their ionic basis in voltage-gated sodium channel inactivation and persistent potassium efflux.

Heads up

The video describes the absolute refractory period as lasting until just before repolarization is complete, whereas your course marks it as ending approximately one-third of the way through repolarization.

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