List two peculiar properties of nerve fibre.

Explanation

### Step-by-Step Solution:

1. **Understanding Nerve Fibers**: Nerve fibers are long, slender projections of nerve cells (neurons) that transmit electrical signals throughout the body. The axon is a key part of the nerve fiber responsible for carrying nerve impulses.

2. **Identifying Properties**: We need to identify two specific properties of nerve fibers that are essential for their function.

3. **First Property - Excitability**:
- **Definition**: Excitability refers to the ability of nerve fibers to respond to stimuli and generate nerve impulses.
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