1. At rest, the neuron is called polarized.
2. The neuron becomes activated when an incoming impulse opens the ion channels.
3. Sodium ion channels open allowing a mere positive charge on the inside of the cell membrane, known as depolarization.
4. Potassium channels open allowing the positively charged ions to move out through the semipermeable membrane, returning the neuron to a polarized state.
5. The next group of channels flips open briefly and continues the action potential all the way down the neuron.
a) True
b) False