Action potentials move along axons
A)more slowly in axons of large than 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 non-myelinated axons.
E)by reversing the concentration gradients for sodium and potassium ions.

Question

Quizplus · Accepted Answer

Myelinated axons have a myelin sheath that acts as an insulator, allowing action potentials to jump rapidly from one node of Ranvier to the next. This is known as saltatory conduction and can result in faster conduction of action potentials compared to non-myelinated axons.

Action Potentials Move Along Axons