Innermost meninx covering brain is

Options

A. arachnoid
B. meninx primitiva
C. piamater
D. duramater

Answer

### Step-by-Step Solution:

1. **Understanding Meninges**: The question asks about the innermost meninx covering the brain. Meninges are the protective membranes that surround the brain and spinal cord. There are three layers of meninges.

2. **Identifying the Layers**: The three layers of meninges are:
- **Dura Mater**: This is the outermost layer. It is tough and made of white fibrous connective tissue.
- **Arachnoid Mater**: This is the middle layer. It resembles a cobweb and has a space beneath it called the subarachnoid space.
- **Pia Mater**: This is the innermost layer. It is a thin and delicate membrane that is tightly bound to the surface of the brain and spinal cord.

3. **Determining the Correct Answer**: Since the question specifically asks for the innermost meninx, we identify that the Pia Mater is the layer that directly covers the brain and spinal cord.

4. **Final Answer**: Therefore, the innermost meninx covering the brain is the **Pia Mater**.