Question

The myelin sheath around the axon is produced by which type of cells?

• A. Satellite glial cells
• B. Radial glial cells
• C. Dendrocytes
• D. Schwann cells

Answer 1

The correct option is D Schwann cells

1. Myelin sheath is formed by oligodendrocytes in the central nervous system and by Schwann cells in the peripheral nervous system.
2. These cells wrap layer upon layer of their own plasma membrane in a tight spiral around axon.
3. The insulating layer checks the leakage of charge and lesser stoppage points (nodes of Ranvier) leading to acceleration of the conduction of impulse and conservation of the metabolic energy.

So, the correct option is 'Schwann cells'.