Where does CFS produced deep inside the brain flow to?

Cerebrospinal fluid (CSF) is produced deep inside the brain in the choroid plexus of the ventricles. It flows through the ventricles and into the subarachnoid space, which is the space between the brain and the skull. CSF then circulates around the brain and spinal cord, providing nutrients and removing waste products. Eventually, CSF is reabsorbed into the bloodstream through the arachnoid villi, which are small projections of the arachnoid membrane that extend into the dural sinuses.