The arachnoid mater (or simply arachnoid) is one of the three meninges, the protective membranes that cover the brain and spinal cord. It is so named because of its resemblance to a spider web.

An arachnoid cyst is a noncancerous fluid-filled sac that grows on your brain or spinal cord. Most of the time, it’s something you were born with. It’s rare to cause symptoms or need treatment. But if you …

Nov 6, 2025 · The arachnoid mater is the middle layer of the meninges, lying directly underneath the dura mater. It consists of layers of connective tissue, is avascular, and does not receive any innervation.

Feb 15, 2024 · The arachnoid mater is the middle layer of the meninges enveloping the brain and spinal cord. It lies closely against the dura mater, however, it is not attached to it.

The arachnoid mater is named for the delicate, spiderweblike filaments that extend from its deep surface, through the cerebrospinal fluid of the subarachnoid space, to the pia mater.

The meaning of ARACHNOID is of or relating to a thin membrane of the brain and spinal cord that lies between the dura mater and the pia mater. How to use arachnoid in a sentence.

Sep 10, 2024 · Arachnoiditis is a pain disorder that develops when the arachnoid becomes inflamed. It is characterized by severe stinging, burning pain, and neurological problems.

Sep 30, 2024 · The arachnoid layer isn’t just sitting around looking fabulous – it’s got a job to do, and boy, does it do it well! First and foremost, the arachnoid membrane is a key player in the brain’s …

Aug 9, 2022 · Arachnoiditis is a rare pain disorder caused by inflammation of the arachnoid, one of the membranes that surrounds the nerves of your spinal cord. It can cause severe pain and neurological …

The arachnoid mater is the second layer of the meninges, situated internally to the dura mater. It envelops the brain and spinal cord, forming a delicate and transparent membrane.