The meninges, protective layers enveloping the brain and spinal cord, are structured from external to internal as follows:
Dura mater: The outermost, robust layer offering significant protection.
Arachnoid mater: The intermediate layer, characterized by its delicate, web-like appearance.
Pia mater: The innermost, thin, and fragile layer, which intimately follows the contours of the brain and spinal cord.
This layering system guarantees adequate protection and shock absorption for the central nervous system.