Ventricular System Flashcards
Borders of the lateral ventricals (inf, medial, ant, post)
inf- thalmus, body of caudate, stria terminalis
Med- Body of fornix and spetum pellucidum
Ant- inf surface of corpus collosum, frontal forceps
Post- geniculocalcarine fibres
If caroid plexus inside lat ventrical inflame what could they compress
Geniculocalcararnie fibres causing visual field defects
How does the lat ventricals communicate w third ventricle
thru interventricular foramen
Where is the 3rd ventrical located
bw r + l thalmus
Where is the choroid plexus of the 3rd ventrical located
on the tella chorodidea (roof of the ventrical)
What is the connection bw 3rd and 4th ventrical and what does it pass thru
cerebral aquaduct
passes thru midbrain
What is the median apeture
principal connection bw ventricular system (4th ventricle) and subarachnoid space
when CSF enters median apeture where does it go
Cerebellomedullary cistern (area which holds large amounts of CSF)
What is the lat appeture
Fully occupied by the choroid plexus of lat ventricle (protrudes into subarachnoid space)
what are the areas called where CSF pools in subarachnoid space
Cistern
How is the CSF moved around the subarachnoid space
Cilia and movements of the spine
Where is the sup cistern located
located above sup suface of corpus collosum
How much CSF is in the body at any one time and how much is produced per day
80-150ml og CSF at any one time
300-400ml produced per day
Whta is responsible for CSF absorbtion
arachnoid granulations absorb the extra CSF which protrudes within the sup sagittal sinus.
What occurs in Hydrocephaly
When CSF fails to drain into subarachnoid space thru median apeture.
Csf accumulates in brain and leads to increased pressure with leads to expansion of brain
