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6 Cards in this Set
- Front
- Back
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Routes of Entry into the CNS
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Hematogenous
Direct Extension Retrograde axonal transport Leukocytic trafficking |
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What does Hematogenous mean?
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1. originating in the blood.
2. blood-producing. 3. distributed or spread by way of the bloodstream, as in metastases of tumors or in infections; blood-borne. |
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Hematogenous routes
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Meninges, neuropil
Choroid plexus CSF |
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Direct Extension Routes
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Penetrating trauma
Middle and/or inner ear infection Cribifor plate Nasal cavity/sinuses |
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Retrograde Axonal Transport
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Viral
Bacterial ex: Rabies, Lysteriosis - puncture oral cavity and bacteria gets in |
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Leukocyte Trafficking routes
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Fungi, Viruses, Higher Bacteria
hide in lymphocytes ex: blastos & histos |
