The correct sequence of meanings from inner to outer side is

Options

A. Arachnoid membrane `to` dura mater `to` pia mater
B. Dura mater `to` arachnoid membrane `to` pia meter
C. Pia mater `to` arachnoid membrane `to` dura mater
D. Dura mater `to` pia mater `to` arachnoid membrane

Answer

To determine the correct sequence of the meninges from the inner to the outer side, we need to understand the structure and order of the three layers that protect the brain and spinal cord.

### Step-by-Step Solution:

1. **Identify the Meninges Layers**: The meninges consist of three layers:
- **Pia Mater**: This is the innermost layer that is directly attached to the surface of the brain and spinal cord.
- **Arachnoid Membrane**: This is the middle layer that lies between the pia mater and the dura mater.
- **Dura Mater**: This is the outermost layer that provides the most protection.

2. **Establish the Order from Inner to Outer**: Based on the identification of the layers:
- The innermost layer is the **Pia Mater**.
- The middle layer is the **Arachnoid Membrane**.
- The outermost layer is the **Dura Mater**.

3. **Write the Correct Sequence**: Therefore, the correct sequence of the meninges from inner to outer is:
- **Pia Mater** (innermost)
- **Arachnoid Membrane** (middle)
- **Dura Mater** (outermost)

4. **Select the Correct Option**: From the options given:
- Option A: Arachnoid membrane, Dura mater, Pia mater
- Option B: Dura mater, Arachnoid membrane, Pia mater
- Option C: Pia mater, Arachnoid membrane, Dura mater
- Option D: Dura mater, Pia mater, Arachnoid membrane

The correct option that matches our sequence is **Option C: Pia Mater, Arachnoid Membrane, Dura Mater**.

### Final Answer:
The correct sequence of meninges from inner to outer side is **Pia Mater, Arachnoid Membrane, Dura Mater**.

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