Question

Schwan cells are found in

• A. Myelinated nerve fibres
• B. Unmyelinated nerve fibres
• C. Both $A$ and $B$
• D. None of the above

Answer 1

Answer: (C)

• There are two types of axons, namely, myelinated and non-myelinated.
• The myelinated nerve fibres are enveloped with Schwann cells, which form a myelin sheath around the axon.
• The gaps between two adjacent myelin sheaths are called nodes of Ranvier.
• Unmyelinated nerve fibre is enclosed by a Schwann cell that does not form a myelin sheath around the axon.