Why cerebrospinal fluid are transformed into blood stream??

Cerebrospinal fluid (CSF) is not transformed into the bloodstream. CSF is a clear, colorless fluid that surrounds the brain and spinal cord, providing cushioning and protection. It is produced in the ventricles of the brain and circulates around the central nervous system.

CSF is primarily absorbed back into the bloodstream through a structure called the arachnoid granulations or arachnoid villi. These structures are located in the meninges, which are the protective membranes surrounding the brain and spinal cord. The arachnoid granulations act as one-way valves, allowing CSF to be reabsorbed into the bloodstream while preventing blood from entering the CSF.

The reabsorption of CSF into the bloodstream helps maintain the balance of fluid in the brain and spinal cord and regulates the pressure within the central nervous system.