👉 The elected fluid, also known as cerebrospinal fluid (CSF), is a clear, colorless liquid that circulates within the central nervous system (CNS) of the brain and spinal cord. Unlike blood, which is produced by the bone marrow and circulates through the body, CSF is primarily produced by specialized cells called choroid plexuses in the ventricles of the brain and is continuously generated and reabsorbed by the brain's arachnoid granulations and the dural sinuses. This fluid serves multiple critical functions, including cushioning the brain and spinal cord from mechanical shocks, providing nutrients to neural tissues, removing waste products, and maintaining a stable chemical environment essential for proper neuronal function. The election of cells that produce CSF ensures a constant and regulated supply, vital for the health and operation of the CNS.