👉 The blind fluid, also known as cerebrospinal fluid (CSF), is a clear, colorless liquid that surrounds and protects the brain and spinal cord. Unlike blood, which is pumped by the heart, CSF is produced within the ventricles of the brain and flows through the central canal, eventually draining into the subarachnoid space surrounding the spinal cord. This fluid serves multiple vital functions, including cushioning the brain and spinal cord from mechanical shocks, maintaining a stable chemical environment, and facilitating the removal of waste products. The blind fluid's production and circulation are regulated by a network of choroid plexuses, ensuring the brain remains properly hydrated and protected.