What are the three layers of the meninges?

The three layers of the meninges are the dura mater, arachnoid mater, and pia mater. These membranes envelop the brain and spinal cord, providing essential protection and structural support.

The dura mater is the outermost layer, characterized by its tough and fibrous nature, which helps shield the central nervous system from physical impacts. Beneath it lies the arachnoid mater, a web-like structure that absorbs shock and helps maintain the cerebrospinal fluid (CSF) that cushions the brain and spinal cord. The innermost layer is the pia mater, which closely adheres to the surface of the brain and spinal cord, providing a rich supply of blood vessels that nourish the nervous tissue.

Understanding these layers is crucial for topics related to neuroanatomy and the protection of the central nervous system.