👉 The head fluid, also known as cerebrospinal fluid (CSF), is a clear, colorless liquid that circulates within the central nervous system (CNS) and surrounds the brain and spinal cord. It serves multiple critical functions, including providing nutrients to neural tissues, removing waste products, cushioning the brain and spinal cord from physical impacts, and maintaining a stable chemical environment. The head fluid is produced by the choroid plexus in the ventricles of the brain and circulates through the ventricular system, subarachnoid space, and eventually drains into the fourth ventricle before re-entering the bloodstream via the arachnoid villi. This constant flow and exchange ensure optimal functioning and protection of the CNS.
