Term
| What are the components of the meninges? |
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Definition
-dura mater
-subdural space
-arachnoid mater
-subarachnoid space
-pia mater |
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Term
| What are the components of the cerebrum? |
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Definition
-cerebral hemispheres
-separated by the longitudinal fissure |
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Term
| What are the components of the cerebellum? |
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Definition
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Term
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Definition
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Term
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Definition
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Term
| If the cerebrum and cerebellum are removed, it reveals what? What are the parts? |
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Definition
-brain stem
-Interbrain: diencephalon
-Mid brain: metencepalon
-Medulla oblongata: myelencephalon |
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Term
| What are the three major incidental BUT COMMON findings in meninges? |
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Definition
-canine senile meningeal fibrosis
-melanosis of pia mater and brain
-osseous metaplasia of dura |
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Term
| What is canine senile meningeal fibrosis? |
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Definition
-tan fibrous thickenings over some of sulci
-INCIDENTAL FINDING IN OLD DOGS |
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Term
| What is melanosis of pia mater and brain? WHich animals are most commonly affected? |
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Definition
-gray discoloration of brain (usually forebrain)
-common in black-faced animals |
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Term
| What is spinal dural ossification or osseous metaplsia? |
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Definition
| -multiple flat plaques of dural osseous metaplasia along spinal cord of old dogs |
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Term
| What is the general shape and characteristics of neurons? |
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Definition
-pyramidal to rhomboidal shape w/ large nucleus & nucleolus
-cytoplasm contains Nissl substance w/ axon hillock |
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Term
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Definition
-glue b/n stuff
-astrocytes + oligodendroglia + microglia |
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Term
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Definition
| -eosinophilic fibrillar material b/n cell nuclei composed of the cell processes of neurons and glia |
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Term
| What are the functions of astrocytes? |
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Definition
-structure: maintain brain structure
-homeostasis: intracellular link b/n capillaries & brain cells
-immune regulation |
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Term
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Definition
| -make and maintain CNS myelin |
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Term
| What do Schwann cells do? |
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Definition
-provide myelin for peripheral nerves
-one to one |
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Term
| What is the only glial cell not from neural crest origin? What do they do? |
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Definition
-microglia cells
-resident phagocytes |
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