👉 A fluid in the context of the human body, particularly referring to cerebrospinal fluid (CSF), is a clear, colorless, and slightly yellowish liquid that circulates within the central nervous system (CNS). This fluid acts as a protective cushion for the brain and spinal cord, reducing their impact during movements and shielding them from mechanical injury. It also plays a vital role in nutrient delivery, waste removal, and maintaining the chemical stability of the CNS environment. Produced by the choroid plexus in the ventricles and absorbed through the arachnoid villi into the bloodstream, CSF flows continuously, ensuring optimal function and health of the brain and spinal cord.
