Vascular Supply Of Head And Neck
Cerebrospinal fluid (CSF)
- CSF is present in the ventricular system of the brain and in the subarachnoid space around the brain and spinal cord.
- The CSF is mainly formed by the choroid plexuses of lateral ventricles and lesser amounts by the choroid plexus of 3rd and 4th ventricles.
- The total quantity of CSF is about 150 ml. It is formed at the rate of 200 ml/hr or 500 ml/day. The normal pressure is 10 - 60mm of H2O.
Functions of CSF
- A pathway for excretion from the CNS.
Applied Anatomy of CSF
CSF rhinorrhea is seen in naso ethmoidal # and in Lefort II and III # associated with comminuted cribriform plate of ethmoid. The mixed blood and CSF leaking from the nose produces a tramline effect on the face and a halo effect on the pillow and sheets.
Image of CSF collected
Image of CSF circulation
Image of MRI showing pulsation of CSF
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