11. What is the normal sequence of events following the stimulation of a neuron? a. Rush of sodium ions into the axon, depolarization of axon membrane, refractory period b. Rush of sodium ion into the axon, refractory period, depolarization of axon membrane c. Depolarization of axon membrane, rush of potassium ions into the axon, refractory period d. Refractory period, rush of sodium ions into the axon, depolarization of axon membrane

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