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

Myelinated axons transmit action potentials via saltatory conduction, with the signal jumping between Nodes of Ranvier. The myelin sheath acts as an insulator, preventing signal dissipation and greatly increasing nerve impulse speed. This mechanism is more efficient than continuous conduction in unmyelinated fibers.