Action Potentials Move Along Axons

Multiple Choice

Action potentials move along axons

A) more slowly in axons of large diameter as compared to those of small diameter.
B) by the direct action of acetylcholine on the axonal membrane.
C) by activating the sodium-potassium "pump" at each point along the axonal membrane.
D) more rapidly in myelinated than in nonmyelinated axons.
E) by reversing the concentration gradients for sodium and potassium ions.