CSF Flashcards
is a major fluid of the body
Cerebrospinal fluid (CSF)
This fluid provides physicians with a tool by which to evaluate the ______________
central nervous system (CNS).
CSF Function:
•supply nutrients to the nervous tissue
•remove metabolic wastes
•produce a mechanical barrier to cushion the brain and spinal cord against trauma
Brain and spinal cord are lined with
Meninges
Lines the skull and vertebral canal (hard mother)
Dura mater
filamentous; spider like (spiderweb- like)
Arachnoid mater
thin membrane lining the surfaces of the brain and spinal cord (gentle mother)
Pia mater
CSF is produced in the __________ of the two lumbar ventricles and the third and fourth ventricles
choroid plexuses
In adults,
approximately ____mL of fluid is produced every hour.
20 mL
To maintain a volume of
______ to _______ mL in adults
90 to 150
To maintain a volume of ____ to______ mL in neonates,
10 to 60 mL
are capillary networks that form the CSF from plasma by mechanisms of selective filtration under hydrostatic pressure and active transport secretion
Choroid plexuses
The fluid flows through the _____________ space located between the arachnoid and pia mater
subarachnoid
tight-fitting structure of the endothelial cells in the choroid plexuses is termed the ____________
blood–brain barrier
The procedure for obtaining CSF is known as a
Lumbar puncture
mL of CSF is slowly removed into three or four sterile tubes that are numbered sequentially
10 to 20 mL
Tube 1 used
Chemistry and serology
Tests are least affected by blood
or bacteria introduced as a result
of the tap procedure
tube 1
Preservation/consideration tube 1
Frozen
Tube 2 used
Microbiology
Preservation/consideration tube 2
Room temperature
Least likely to contain cells
introduced by the spinal tap
procedure
Tube 3
Preservation/consideration tube 3
Refrigeration
Tube 4 used
Microbiology and additional serologic test
