Cerebrospinal Fluid

Cerebrospinal Fluid (CSF) is also known as liquor. It is produced by modified ependymal cells of the choroid plexus and occupies the space between the arachnoid mater and the pia mater. In the spinal cord is found in the central canal. It contains 0.3% plasma proteins and also other soluble salts found in plasma. It is reabsorbed into the venous system in order to prevent pressure build up in the subarachnoid spaces and brain ventricles, by the arachnoidal granulations. It’s an isotonic solution, which acts as a cushion providing mechanical protection to the cortex of the brain and also plays an immunological role. For the latter reason, lumbar punctures are performed in order to obtain CSF and carry out diagnosis of various infections.

Circulation of CSF
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Clinical CSF Findings
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=Lumbar Puncture=