Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
The dura mater is the outermost, thick, tough membrane covering the brain and spinal cord, serving as a protective layer for the central nervous system. It is one of the three layers of the meninges that encase the central nervous system.
The three membranes (dura mater, arachnoid mater, and pia mater) that envelop the brain and spinal cord, providing protection and support.
Cerebrospinal Fluid (CSF): A clear fluid found in the brain and spinal cord that acts as a cushion for these structures, also aiding in nutrient delivery and waste removal.
Arachnoid Mater: The middle layer of the meninges located between the dura mater and pia mater, contributing to the protection and encapsulation of the central nervous system