Cerebrospinal fluid
| Cerebrospinal fluid | |
|---|---|
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| Details | |
| Identifiers | |
| Latin | liquor cerebrospinalis |
| Acronym(s) | CSF |
| TA | A14.1.01.203 |
| FMA | 20935 |
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Anatomical terminology
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Cerebrospinal fluid (CSF) is a clear, colorless body fluid found in the brain and spine. It is produced in the choroid plexuses of the ventricles of the brain. It acts as a cushion or buffer for the brain's cortex, providing basic mechanical and immunological protection to the brain inside the skull. The CSF also serves a vital function in cerebral autoregulation of cerebral blood flow.
The CSF occupies the subarachnoid space (between the arachnoid mater and the pia mater) and the ventricular system around and inside the brain and spinal cord. It constitutes the content of the ventricles, cisterns, and sulci of the brain, as well as the central canal of the spinal cord.
There is also a connection from the subarachnoid space to the bony labyrinth of the inner ear via the perilymphatic duct where the perilymph is continuous with the cerebrospinal fluid.
The brain produces roughly 500 mL of cerebrospinal fluid per day. This transcellular fluid is constantly reabsorbed, so that only 100–160 mL is present at any one time.
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