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9 Cards in this Set
- Front
- Back
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What is the embryological origin of CNS neurons, ependymal cells, and oligodendroglia, astrocytes?
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Neuroectoderm
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What is the embryological origin of Schwann cells and PNS neurons?
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Neural crest
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What is the origin of the microglia?
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mesoderm
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What is the purpose of astrocytes?
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physical support, repair, K+ metabolism, removal of excess neurotransmitter, maintenance of the blood brain barrier. Reactive gliosis in response to injury
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What is the histochemical maker for astrocytes?
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GFAP
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What is the puprose of the microglia?
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CNS phagocytes.
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What is the purpose of oligodendrocytes?
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myelinate multiple CNS axons
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What do oligodendroglia look like on H&E stain?
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fried eggs
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What are the layers of the peripheral nerve?
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endoneurium - invests single nerve fiber
perineurium - surrounds fasicle of nerve fibers, must be rejoined in microsurgery for limb reattachement, permeability barrier epineurium - dense connective tissue that surrounds the entire nerve |
