The phases of the action potential (nerve impulse) are
A)excitatory and inhibitory.
B)sensory and motor.
C)depolarization and repolarization.
D)dendrites and axons.

Question

Quizplus · Accepted Answer

The two phases of the action potential are depolarization and repolarization, marked by the influx of ions that cause the neuron to become more positive (depolarization) and the subsequent outflow of ions that cause the neuron to return to its resting state (repolarization). Choice A refers to types of neurotransmitters, not phases of the action potential. Choice B refers to types of neurons, not phases of the action potential. Choice D refers to parts of a neuron, not phases of the action potential.

The Phases of the Action Potential (Nerve Impulse) Are