Cerebrospinal fluid (csf) is a clear, plasma-like fluid (an ultrafiltrate of plasma) that bathes the central nervous system (cns). It occupies the central spinal canal, the ventricular system, and the Ò€¦ Csf acts as a shock absorber, cushion or buffer, providing basic mechanical and immunological protection to the brain inside the skull.

Cerebrospinal fluid (csf) is a watery fluid that continually circulates through the brainÒ€ℒs ventricles (hollow cavities) and around the surface of the brain and spinal cord.