Functions of meninges:
1. Meninges give protection to the brain and the spinal cord.
2. They are also nutritive in function.
3. Cerebrospinal fluid acts as a shock absorber. It protects the brain from mechanical injuries and from desiccation.
4. It also maintains constant pressure inside and outside the CNS and regulates the temperature.
Functions of CSF:
1. CSF helps in exchange of nutrients and wastes between the blood and the brain tissue.
2. CSF supplies oxygen to the brain.