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Flashcards in CSF neuroanatomy Deck (6)
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1
Q

How is CSF produced? [3]

A

In an active (ATP requiring) process.
Na pumped into subarachnoid space through Choroid Plexuses of ventricles
Water follows Na from the blood vessels into the ventricles

2
Q

Where is most choroid plexus found? [4]

A
  • Roof of Temporal Horns of Lateral Ventricles
  • Floor of Bodies of Lateral Ventricles
  • Roof of Posterior 3rd Ventricle
  • Roof of 4th ventricle
3
Q

Through what foramen does CSF travel? [3]

A
  • Foramen of Monro from lateral to 3rd ventricles
  • Foramen of Magendie from 4th ventricle to Spinal subarachnoid space (M is for midline)
  • Foramina of Luschka from 4th ventricle to cranial subarachnoid space (L is for lateral)
4
Q

How much CSF is produced in the brain? [1]

A

An adult makes 450-600 CCs of CSF every day [1]

But only maintains ~150CCs in the brain at any point (~25 of which is in the ventricles)

So production = resorption

5
Q

Where is CSF reabsorped? [2]

A

Through Arachnoid villi [1] within arachnoid granulations along the dural venous sinuses (mainly the sup sagittal) [1]
Unlike production, this is entirely passive

6
Q

How do arachnoid villi work? [1]

A

A passive process that is a group of pressure-dependant valves
Driven by pressure gradient between ICP & CVP