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Answer: 4. Schwann Cells and Oligodendrocytes

The myelin sheath is formed by glial cells that wrap around axons.

  • In the peripheral nervous system, Schwann cells form it.
  • In the central nervous system, oligodendrocytes form it.

Astrocytes support and nourish neurons but do not form myelin, and osteoclasts are bone-resorbing cells, so options 1, 2 and 3 are wrong.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report
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