As soon as all that's underway (Voltage in axon), the process of repolarization kicks in. This time the voltage-gated potassium ion channels open up, letting those potassium ions flow out, in an attempt to rebalance the charges. What happens during the process of repolarization in the axon?
1) Sodium ions flow into the axon
2) Potassium ions flow into the axon
3) Potassium ions flow out of the axon
4) Chloride ions flow out of the axon
