Meninges of the brain

Meninges of the brain

1. Meninges of the Brain Protective layer covering Central nervous system. Three layers; 1. Dura Mata 2. Arachnoid Mata 3. Pia Mata Meningitis derived from Meninges

2. Dura Mater Latin for ‘Tough Mother’ Thick and Durable membrane Closest to the Skull Composed of Dense Connective tissue Supports Venous Channels between the two membranes

3. Arachnoid Mater Middle part of the Meninges Web like appearence Provides cushioning effect for the CNS Thin transparent membrane Impermeable to fluids

4. Pia Mater Latin for ‘Soft Mother’ Adheres to surface of Brain Thin membrane and Impermeable to fluids Large Blood Supply

5. Spaces Subarachnoid space contains Cerebrospinal fluid and is between arachnoid and the pia mater Active in the blood brain barrier Through injury dura mater and arachnoid mater separate a nd form the subdural space.