In anatomy, the<unk>  (, singular: meninx ( or ), from , adjectival:<unk> l ) are the three membranes that envelop the brain and spinal cord. In mammals, the<unk>  are the dura mater, the arachnoid mater, and the pia mater. Cerebrospinal fluid is located in the subarachnoid space between the arachnoid mater and the pia mater. The primary function of the<unk>  is to protect the central nervous system.
Meninges
Meningism
Seroma
Brain abscess
Meningitis
Encephalitis
Leptomeningeal cancer
Meningoencephalitis