Question

If myelin sheath is continued in myelinated nerve fibre then what will happen in a neuronal conduction?

• A. Velocity will be increased.
• B. Conduction will be slow.
• C. Conduction will be stopped.
• D. No effect is seen.

Answer 1

The correct option is C Conduction will be stopped.

Myelin is an insulating layer or sheath, that forms around nerves, including those in the brain and spinal cord. It is made up of protein and fatty substances. The purpose of the myelin sheath is to allow electrical impulses to transmit quickly and efficiently along the nerve cells. Nerve impulses cannot pass through the myelination, so they jump from one node of Ranvier to the next. If the whole nerve becomes myelinated then the conduction will be stopped.