Why unmyelinated nerve fibres are enclosed by Schwaan cells?
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Non-myelinated nerve fibres of the peripheral nervous system are enclosed within continuous chains of Schwann cells. However, in comparison to myelinated fibres, there are no nodes of Ranvier in non-myelinated fibres and there may be as many as nine nerve fibres enveloped within the folds of the Schwann cells in the chain
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ziafat111:
but if they have continuous myelin sheath then why they are called as non -myelinated
they have continuous schwaan cells no myelin sheath
ok..but myelin sheath is made up of schwaan cells
The myelin sheath is made of a material called myelin, which is produced by special cells known as Schwann cells.
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