Cerebrospinal fluid (CSF) is produced by the choroid plexuses of the lateral, third and fourth ventricles Passes from the lateral ventricles to the third ventricle through the two interventricular foramina (foramen of Monro) passes from the third ventricle to the...
Reabsorbed by the arachnoid granulations: Villi arising from the arachnoid mater Project into venous sinuses and veins Reabsorption occurs throughout the brain and spine 90% by villi of the sagittal and sigmoid Dural sinuses 10% by spinal villi Reabsorption due to...
Overall volume is between 100-150ml 2⁄3 within the ventricles 1⁄3 within the subarachnoid space around the spinal cord (35ml) Equates to ~10% of intracranial volume Related Pages: (5.6)...
CSF pressure is gravitational and varies with position In the lateral position normal pressure is 5-20 cm of H2O In the sitting position: Pressure in the lumbar region rises to 20-50 cmH20 Pressure in the cervical region may be sub-atmospheric Related Pages: (5.6)...