The<unk>  (singular meninx) is the system of membranes which envelop the central nervous system. The<unk>  consist  of three layers: the dura mater, the arachnoid mater, and the pia mater. The primary function of the<unk>  and of the cerebrospinal fluid is to protect the central nervous system.
Meninges
Meningism
Brain abscess
Meningitis
Encephalitis
Meningoencephalitis
Cerebritis
Coma