Graded Potential to Action Potential: Match these components of an action potential according to
the most likely numerical order in which they might occur.
1
2
3
4
5
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As the refractory period continues, the action potential reaches synaptic bulbs of the axon terminals.
As the action potential propagates distally down the axons, potassium lon voltage gates open behind the action potential releasing
Sodium ion voltage gates on the axons open and sodium ions rush into the axon starting an action potential. The voltage reaches
Three sodium ions are pumped out of the axons and two potassium ions are pumped into the axons.
The relative refractory period begins and the sodium-potassium pumps operate in order to reset the axons.
Too many potassium ions leave the axons resulting in hyperpolarization of the axon. The voltage is approximately -85 mV.
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