Which glial cells myelinate axons in the peripheral nervous system?

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Multiple Choice

Which glial cells myelinate axons in the peripheral nervous system?

Explanation:
In the peripheral nervous system, myelin is formed by Schwann cells. Each Schwann cell wraps around a single segment of one axon, creating a multilayered insulation that speeds up electrical signaling through saltatory conduction. The gaps between adjacent Schwann cells, the nodes of Ranvier, maximize rapid impulse propagation. Other glial types have different roles: oligodendrocytes myelinate axons in the central nervous system (often several at once), while astrocytes and microglia don’t form myelin.

In the peripheral nervous system, myelin is formed by Schwann cells. Each Schwann cell wraps around a single segment of one axon, creating a multilayered insulation that speeds up electrical signaling through saltatory conduction. The gaps between adjacent Schwann cells, the nodes of Ranvier, maximize rapid impulse propagation. Other glial types have different roles: oligodendrocytes myelinate axons in the central nervous system (often several at once), while astrocytes and microglia don’t form myelin.

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