Does the Arachnoid Membrane Protect the Brain

Three layers of membranes known as meninges protect the brain and spinal cord. The delicate inner layer is the pia mater. The middle layer is the arachnoid, a web-like structure filled with fluid that cushions the brain. The tough outer layer is called the dura mater.

What is the purpose of arachnoid membrane?

Arachnoid mater: Connected to the dura mater on the side closest to the CNS, this middle layer includes a network of fibers and collagen that are part of the suspension system that helps protect the brain and spinal cord from sudden impact.

What protects the brain and spinal cord?

The cerebrospinal fluid (CSF) is a clear, watery liquid that surrounds, cushions and protects the brain and spinal cord. The CSF also carries nutrients in the blood to (and removes waste products from) the brain. It circulates through chambers called ventricles and over the surface of the brain and spinal cord.