Why do impulses travel faster along myelinated axons than along non-myelinated axons of the same diameter?
Correct answer B. Depolarisation jumps from one node of Ranvier to the next
Explanation
Myelin insulates the axon so action potentials form only at the nodes of Ranvier. The impulse jumps from node to node (saltatory conduction), greatly increasing speed.
Answer checked How we write and check questions
Discussion