How do nucleus and ganglion differ from each other ?

Explanation

### Step-by-Step Text Solution

1. **Definition of Nucleus**:
- A nucleus is a group of neurons located within the central nervous system (CNS), specifically in the brain and spinal cord.

2. **Definition of Ganglion**:
- A ganglion is also a group of neurons, but it is located in the peripheral nervous system (PNS), which includes structures outside the brain and spinal cord.

...