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22 Cards in this Set
- Front
- Back
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3rd major body fluid |
Cerebrospinal Fluid |
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Functions of the CSF |
(1) Supply Nutrients to the Nervous System (2) Removes Metabolic Waste (3) Produces a mechanical barrier to cushion the brain & spinal cord against trauma |
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Meninges |
Lines the brain and the spinal cord |
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3 Layers of Meninges |
Dura Mater (Outer layer) Arachnoid Mater (Spider-web like) Pia Mater (Innermost layer) |
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Dura Mater |
Outer layer; lines the skull & vertebral canal |
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Arachnoid Mater |
Spiderweb-like; Filamentous inner membrane |
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Subarachnoid space |
Where CSF Flows |
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Pia Mater |
Innermost layer; Lines the surface of the brain and spinal cord |
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Choiroid Plexus |
Specific part of the brain that produces CSF (CSF Production) by Selective Filtration |
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Rate of CSF Production |
20 mL/hr |
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Reabsorbs CSF |
Arachnoid Villi/Granulations |
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Functions of the Blood Brain Barrier |
(1) Protects the brain from chemicals and other substances circulating the blood that can harm the brain tissues (2) Disruption of the BBB allows the WBC, Proteind and other chemicals to enter the CSF. |
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Volume to be collected for CSF |
20 mL |
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Method collection of CSF |
Lumbar puncture |
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Location for the collection of CSF |
Between 3rd, 4th or 5th Lumbar vertebrae |
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How many tubes for the collection of the CSF? |
3 CSF TUBES |
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Tube 1
purpose |
Chemistry/Serology (Frozen)
Least affected by blood or bacteria introduced by the Spinal Tap |
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Tube 2 |
Microbiology (Room Temp.) |
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Tube 3 |
Hematology (Ref) least likely to contain cells introduced by the Spinal Tap |
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TUBE 4 |
Microbiology/Serology (1)better exclusion of skin contamination (2) Additional Test |
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Order of draw if 1 CSF Tube only |
Micro Hema Chem/Sero |
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Crystal Clear |
Normal color of the CSF |
