Question: Action potentials move along axons _ _ _ _ _ . more slowly in axons of large than in small diameter by activating the sodium

Action potentials move along axons _____.
more slowly in axons of large than in small diameter
by activating the sodium-potassium pump at each point along the axonal membrane
more rapidly in myelinated than in non-myelinated axons
by reversing the concentration gradients for sodium and potassium ions

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