The ventricles, central canal and sub-arachnoid space are filled with colorless and alkaline fluid called Cerebro Spinal Fluid (CSF). It is more like plasma juice. It contains less amount of protein, amino acid, cholesterol etc. An adult’s brain contains 150 milliliters of CSF.
Importance of cerebrospinal fluid
1. Protects the central nervous system from mechanical injury.
2. Protects the central nervous system from microbial attack.
3. It keeps the brain afloat and reduces weight.
4. Provides nutrients to the central nervous system.
5. Discharges waste through gaseous materials.