Cerebrospinal Fluid Flashcards
What secretes CSF?
Ependymal Cells that line the ventricular system
What is the Choroid Plexus?
A series of vapillary beds that extend into all four ventricles
True or False:
CSF continues as ventricular lining of the choroid plexus?
TRUE
Where is teh CSF produced and by what?
In the subarachnoid space by capillary beds in the meninges
At what rate is CSF continuously produced at per day?
500 ml/day
In general terms what does the CSF do?
Reduces the relative mass of the brain and also cushions it
Are their feedback mechnisms that can shut down CSF production?
NO
Why is the idea that CSF has no feedback mechanisms to stop production relative/important?
Because blockage of CSF flow can result in build up of interventricular pressure and/or intercranial pressure
What can cause blockage of interventricular pressure and/or intracanial pressure?
Build up of CSF
What is Obstructive Hydrocephalus?
Blockage of normal flow of CSP out of the ventricular system
Where are the common locations Obstructive Hydrocephalus can occur?
- ) Interventricular foramen
- ) Cerebral Aqueduct
- ) Outflow from the 4th ventricle
What is Communicating Hydrocephalus?
When CSF is blocked after it exits the ventricles, it is termed communicating because CSF can still flow between the ventricles
Distinguish between Obstructive hydrocephalus and Communicating hydrocephalus
Obstructive: results from blockage out of the ventricular system
Communicating: results from absorbtion** or **circulation probelms
