Neurology Book

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Cerebral Spinal FluidAka: CSF

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  1. See Also
    1. Intracranial Pressure Elevation Causes
    2. Cerebrospinal Fluid Examination
    3. Lumbar Puncture
  2. Physiology
    1. Choroid Plexus: Formation of CSF
      1. Tufts of capillaries in lateral ventricles
      2. Produces CSF at 20 ml/hour
    2. Pathway
      1. Produced in both lateral ventricles
      2. Each ventricle drains into a foramina of Monro
      3. Both foramina drain into a single third ventricle
      4. CSF flows into aqueduct of Sylvius
      5. Enters fourth ventricle in posterior fossa
      6. Seeps into subarachnoid space via 3 small holes
      7. CSF in subarachnoid space cushions brain and spine
      8. CSF reabsorbed by arachnoid granules (top of brain)
      9. CSF empties into superior sagital sinus (venous)
    3. CSF Volume
      1. Total CSF in circulation: 140 ml
      2. Distribution
        1. Ventricles: 25 ml
        2. Subarachnoid space: 115 ml

[D]Cerebrospinal fluid abnormality (C0151583)

ConceptsFinding (T033)
ICD9792.0
EnglishCEREBROSPINAL FLUID ABNORMAL, CSF ABNORMAL, Nonspecific abnormal findings in cerebrospinal fluid, SPINAL FLUID ABNORM
CreditsDerived from the NIH UMLS (Unified Medical Language System)



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