Myelin sheath is produced by
or
Mylin of the nerve fibres of the central nervous system is produced and maintained by

Options

A. Schwann Cells and Oligodendrocytes
B. Astrocytes and Schwann Cells
C. Oligodendrocytes and Osteoclasts
D. Osteoclasts and Astrocytes

Answer

**Step-by-Step Solution:**

1. **Understanding Myelin Sheath**: Myelin sheath is a protective covering that surrounds nerve fibers, which helps in the efficient transmission of electrical signals in the nervous system.

2. **Identifying the Types of Nervous System**: The nervous system is divided into two main parts: the Central Nervous System (CNS) and the Peripheral Nervous System (PNS).

3. **Role of Glial Cells**: Glial cells, also known as neuroglia, are non-neuronal cells that provide support and protection for neurons. They play a crucial role in maintaining homeostasis, forming myelin, and providing support and protection for neurons.

4. **Types of Glial Cells**:
- **Oligodendrocytes**: These are the glial cells responsible for producing and maintaining the myelin sheath in the Central Nervous System (CNS).
- **Schwann Cells**: These are responsible for the formation of myelin sheath in the Peripheral Nervous System (PNS).

5. **Analyzing the Options**: The question provides several options regarding which cells produce the myelin sheath in the CNS:
- Schwann cells and oligodendrocytes
- Astrocytes and Schwann cells
- Oligodendrocytes and osteoclasts
- Osteoplasts and astrocytes

6. **Selecting the Correct Answer**: Since oligodendrocytes are specifically responsible for the formation of the myelin sheath in the CNS, the correct answer is **oligodendrocytes**.

7. **Conclusion**: Therefore, the myelin sheath of nerve fibers in the Central Nervous System is produced and maintained by **oligodendrocytes**.

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