Question

part a
the nerve action potential
use the figure to answer the following question:
when is the neuron in the relative refractory period?
1
4
3
2
submit
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Explanation:

The relative refractory period occurs after the absolute refractory period and is when a neuron can fire an action - potential again, but only if a stronger - than - normal stimulus is applied. On an action - potential graph, it occurs during the hyperpolarization phase. Point 4 on the graph represents the hyperpolarization phase of the nerve action potential.

Answer:

B. 4