How many meningeal membranes are present over human brain?

Explanation

To answer the question about how many meningeal membranes are present over the human brain, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Term "Meningeal Membranes":**
- Meningeal membranes are protective layers that cover the brain and spinal cord.

2. **Identify the Number of Layers:**
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