Fluid, cerebrospinal (CSF)
A watery fluid, continuously produced and absorbed, which flows in the ventricles (cavities) within the brain and around the surface of the brain and spinal cord.</P> The CSF is produced by the choroid plexus, a series of infolded blood vessels projecting into the cerebral ventricles, and it is absorbed into the venous system.</P> If production exceedes absorption, the CSF pressure rises and the result is hydrocephalus.
This can also occur if the CSF pathways are obstructed and CSF accumulates.