1/3
General descriptions and locations of each mater

Dura Mater
L- Surrounds brain and spinal cord
D-most external of the three meninges
F- Protection of brain and spinal cord

Arachnoid Mater
Middle Meninx
seperated from dura mater by narrow serous cavity, subdural space

Subarachnoid mater
Beneath the arachnoid membrane
Spider web like extensions span into this space and secure the arachnoid mater to the underlying pia mater

Pia Mater
Delicate connective tissue highly vascular
Only meninx that clings tightly to the brain