Which part of CNS produces CSF?(b) Give any four functions of CSF.

Answer:

(a) CSF (cerebrospinal fluid) is produced by the choroid plexuses (vascular folds of pia mater with ependymal cells) in the ventricles of the brain, mainly the lateral ventricles (also the third and fourth ventricles).

(b) Functions of CSF:

1. It acts as a shock absorber and protects the brain and spinal cord from mechanical injury.
2. It provides buoyancy to the brain, reducing its effective weight.
3. It supplies nutrients and oxygen to the brain tissue.
4. It removes metabolic wastes from the brain.
5. It keeps the brain moist and maintains a constant pressure (and a stable chemical environment) inside the cranium.