A key advantage of saltatory conduction is that
A) more sodium ions have to be pumped out of the cell after an action potential.
B) myelin allows the nerve cell to recycle neurotransmitter molecules.
C) less transmitter is required to send a message across the next synapse.
D) myelin speeds up the velocity at which an axon can conduct an action potential.
E) myelin requires that nerve cell axons be larger in order to rapidly conduct a signal.
Answer: D
Rationale: A key advantage of saltatory conduction is that myelin speeds up the velocity at which an axon can conduct an action potential.
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