Question

The propagation of action potential in myelinated nerve fiber is faster because of-

• A. Continuous conduction
• B. Saltatory conduction
• C. Spontaneous conduction
• D. Intermittent conduction

Hint:

Understand the role of myelin and the Nodes of Ranvier in facilitating rapid nerve impulse conduction.

Answer 1

The Correct Option is B

In myelinated axons, the action potential jumps between the Nodes of Ranvier in a process called Saltatory conduction. The myelin sheath acts as an insulator, preventing the signal from dissipating and significantly increasing the speed of nerve impulse transmission. This mechanism is far more efficient than continuous conduction in unmyelinated fibers.