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Neural Tissue

Mediumbiology

The myelin sheath in the peripheral nervous system is formed by which cells?

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About This Question

Subject
biology
Chapter
structural organisation in animals and plants
Topic
neural tissue
Difficulty
Medium
Year
2025
Tags
NeuronsMyelin

Solution

Correct Answer:

Schwann cells

  1. Neural Support: Neurons are supported by various non-conducting glial cells.
  2. Myelination: The myelin sheath acts as an electrical insulator for axons.
  3. In the PNS: Schwann cells wrap around individual nerve fibers in the Peripheral Nervous System to form the myelin sheath.
  4. In the CNS: Oligodendrocytes perform this function in the Central Nervous System (brain and spinal cord).
  5. Others: Astrocytes provide metabolic and structural support; Microglia are the resident immune cells of the CNS.

This medium difficulty biology question is from the chapter structural organisation in animals and plants, covering the topic of neural tissue. It appeared in the 2025 exam.

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