Instructions: Given a text passage, come up with an appropriate title for it. The title should accurately represent what the main focus of the passage is. The title of a passage may be present in the first few sentences of the passage and/or be referred to multiple times in the passage. The title should be 1-5 words long.
Input: Cerebrospinal fluid ( CSF ) is a clear , colorless body fluid found in the brain and spinal cord . It is produced by the specialised ependymal cells in the choroid plexuses of the ventricles of the brain , and absorbed in the arachnoid granulations . There is about 125mL of CSF at any one time , and about 500mL is generated every day . CSF acts as a cushion or buffer for the brain , providing basic mechanical and immunological protection to the brain inside the skull . CSF also serves a vital function in cerebral autoregulation of cerebral blood flow .
Output:
Cerebrospinal fluid