How are the cytons and axons placed in the brain and the spinal cord ?

Explanation

### Step-by-Step Solution

1. **Understanding the Structure of the Brain and Spinal Cord**:
- The brain and spinal cord are both parts of the central nervous system (CNS) and have distinct structural components known as grey matter and white matter.

2. **Identifying Grey Matter**:
- Grey matter primarily contains the cell bodies of neurons, also known as cytons. This is where the processing of information occurs.

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