Step 1: Function of CSF.
Cerebrospinal Fluid (CSF) serves several vital functions, including:
1. It acts as a {cushion} or {shock absorber} for the brain and spinal cord, protecting them from mechanical injury.
2. It helps in the {circulation of nutrients} and removal of waste products from the brain.
3. It maintains the {chemical stability} of the central nervous system (CNS).