Name two types of nerve fibres .

Explanation

### Step-by-Step Text Solution:

1. **Identify the Types of Nerve Fibers**:
- There are two main types of nerve fibers: **medulated** and **non-medulated**.

2. **Define Medulated Nerve Fibers**:
- Medulated nerve fibers are characterized by the presence of a **myelin sheath**. This sheath acts as an insulator, allowing for faster transmission of electrical impulses along the nerve fiber.

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