What is the myelin sheath derived from?

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Question

(B) The myelin sheath is an insulating layer that forms around nerves,including those in the brain and spinal cord. In the peripheral nervous system $

Vedclass · Accepted Answer

Schwann cells

Vedclass · Answer

(B) The myelin sheath is an insulating layer that forms around nerves,including those in the brain and spinal cord. In the peripheral nervous system $(PNS)$,the myelin sheath is formed by $Schwann$ cells,which wrap their plasma membranes around the axon multiple times. In the central nervous system $(CNS)$,the myelin sheath is formed by oligodendrocytes. Both $Schwann$ cells and oligodendrocytes are types of neuroglial cells. However,since $Schwann$ cells are specifically responsible for the formation of the myelin sheath in the peripheral nerves,they are the most direct answer among the given options.

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