key term - Meninges

Definition

The meninges are three layers of protective tissue called the dura mater, arachnoid mater, and pia mater that surround the brain and spinal cord. These layers provide protection, support, and contain cerebrospinal fluid which cushions the central nervous system.

Related terms

Cerebrospinal Fluid:

A clear, colorless body fluid found within the brain and spinal cord, acting as a cushion for the brain's cortex, providing basic mechanical and immunological protection to the brain inside the skull.

Dura Mater: The outermost layer of the meninges, tough and durable, it envelops the arachnoid mater and is responsible for keeping in cerebrospinal fluid.

Blood:

Brain Barrier - A filtering mechanism of capillaries that carry blood to the brain and spinal cord tissue, blocking the passage of certain substances