Why is Saltatory conduction is rapid?

Explanation

### Step-by-Step Solution:

1. **Understanding Myelination**:
- Myelin is a fatty substance that insulates axons in the nervous system. This insulation prevents the loss of electrical signals and increases the speed of signal transmission.

2. **Role of Nodes of Ranvier**:
- The Nodes of Ranvier are small gaps in the myelin sheath where the axon membrane is exposed. These nodes play a crucial role in the conduction of electrical impulses.

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