Myelination increases conduction velocity by
- A. Increasing axon diameter
- B. Saltatory conduction
- C. Increasing Na+ channels
- D. Decreasing resistance
Explanation
Myelin insulates the axon, allowing action potentials to jump between nodes of Ranvier (saltatory conduction), greatly increasing speed.
Related questions
In a neurone, impulses are carried away from the cell body by the
A myelinated neurone conducts impulses faster than an unmyelinated one because
The resting potential of about minus 70 millivolts across the membrane of a neurone is maintained mainly by
The rapid depolarisation phase of an action potential is caused by
The all or none law of nerve impulse conduction states that