Question

What are the three meninges of the brain?

Answer 1

The dura mater, the arachnoid mater, and the pia mater.

Explanation:

The brain (and spinal cord) is surrounded by a protective sheath called the meninges which is made up of three layers:

1. The outermost dura mater is a thick durable fibro-elastic membrane that contains large blood vessels that subdivide into capillaries in the pia mater.
2. The middle arachnoid mater is called that because it resembles a spider's web in appearance. It is composed of fibrous tissue and cushions the brain (and spinal cord).
3. The innermost pia mater is a thin delicate membrane that adheres to the surface of the brain (and spinal cord) and provides nourishment to the brain through the blood capillaries that infuse it.