Name the structures involved in the protection of the brain.


• The human brain is protected by the skull.


• Inside the skull, there are cranial meninges that cover the brain.


• The cranial meninges is made up of three layers, namely – Duramater (outer layer), Arachnoid (middle layer) and Pia mater (inner layer which is in contact with the brain).


• Duramater is thick, tough, fibrous membrane


• Arachnoid is a membrane with spider-like structure.


• Piamater is a very thin, delicate and vascular membrane.


The space between duramater and arachnoid is called subdural space.


The space between arachnoid and piamater is called subarachnoid space. It is filled cerebrospinal fluid which acts as cushion for CNS from shock.


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