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45 Cards in this Set
- Front
- Back
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what would be perfromed to see if the CSF was cloudy upon microscopic examination ? |
lumbar puncture |
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what is the function of the meninges |
protection of the brain and the spinal cord |
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what are the three layers of meninges |
dura, arachnoid, pia |
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dura matter means |
tough mother |
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thick layer of what tissue sorrounding the brain ? |
connective |
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very tough providing main |
support and protection |
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2 layers of dura mater seperate and form |
large dural venou sinuses |
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what limit exessive movement of the brain within the cranium |
meningeal layer folds |
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what plane does the falx cerebri lie in |
the sagittal plane |
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what does the falx cerebri do? |
partially seperates the cerebral hemishpheres |
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what does the falx cerebri attach to anteriorly |
crista galli |
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what does the falx cerebri attach to posteriorly |
ypper surface of tentorium cerebeli in the midline |
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what plane is the tentorium cerebelli in? |
horizontal |
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what does the tentorium cerebelli seperate |
cerebrum from the cerebellum |
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falx cerebelli are |
smaller dural fold runs along the vermis of cerebellum |
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what does the falx cerebelli seperate? |
the two cerebral hemispheres |
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what is the subdural space? |
the space between meningeal dura mater and arachnoid mater |
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the subdural space is very narrow and contains a film of |
fluid |
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what may be enlarged by bleeding |
subdural space |
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arachnoid mater is the delicate transparent membrane, connected to the pia mater by |
fine strands of connective tissue |
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what is the subarachnoid space? |
space between rhe aracnoid mater and pia mater |
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is the subarachnoid space wide or narrow ? |
wide |
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what is the subarachnoid space filled with ? |
CSF - watery cushion |
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what does the subarachnoid space contain |
blood vessels |
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what does bleeding in the subarachnoid space result in |
blood in the CSF (subarachnoid haemorrage) |
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what are the arachnoid villi |
knoblike projections of the arachnoid mater |
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arachnoid granulations are |
the collections of arachnoid villi (drain CNS into venous sinuses) |
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what is the Cistern |
enlarged subarachnoid space |
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what does pia mater mean ? |
gentle mother |
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pia mater is a delicat membrane and follows the |
contours of the brain |
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the pia mater enmeshes blood vessels and sends prolongations into brain tissue with blood |
vessels |
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the pia mater helps form the roof of the what? |
ventricles |
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lumbar cistern |
caudal to spinal cord (below L2) |
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what is meningitis characherized by ? |
inflammation of the pia arachnoid |
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what is the most common infection of the CNS |
meningitis |
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what is meningitis usually caused by? |
bacterium or a virus |
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what is the diagnosis of meningitis |
performing a lumbar puncture examining the CSF |
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what are the 4 ventricles |
lateral (2) and the third and fourth |
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what do the ventricular system contain ? |
CSF |
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lateral ventricles |
body + 3 horns |
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what generates CSF |
choroid plexus |
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how much CSF does the brain absorbs per day ? |
about 500 ml |
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CSF is drained into ? |
venous sinus |
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CSF is drained into venous sinus via the |
arachnoid granulations |
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what is the BBB formed by ? |
tight junctions between endothelial cells of cerebral capillaries |
