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Meninges are the protective membranes that surround the brain and spinal cord. They consist of three layers: the dura mater (outer layer), arachnoid mater (middle layer), and pia mater (innermost layer). These layers provide structural support, protect against injury, and contain cerebrospinal fluid, which helps cushion the central nervous system. Meningitis is an inflammation of the meninges, often caused by infection.

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1w ago

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