Meninges of cns diagram

It consists of the dura mater, arachnoid mater, and pia mater. Evelyn Bailey. The meninges functions primarily to protect and support the central nervous system (CNS). It connects the brain and spinal cord to the skull and spinal canal.
Based on their location, meninges are referred to as the cranial meninges which envelop the brain, and spinal meninges which envelop the spinal cord. However, the cranial and spinal meninges are continuous with each other and consist of the same three meningeal layers. From superficial to deep the meninges are the:
Meninges of the Brain and Spinal Cord. The pia mater is a thin, highly vascular membrane investing the brain and spinal cord. The arachnoid and pia mater are considered the “soft meninges or leptomeninges (leptomenix)”. The region between the arachnoid and pia mater is the subarachnoid space which is filled with CSF.