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13 Cards in this Set
- Front
- Back
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What are the 3 planes? |
Saggital Coronal Axial/Transverse/Horizontal |
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CNS consists of _______ and _______ |
Brain and spinal cord |
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The brain is these 3 parts |
Brainstem Cerebellum Cerebrum |
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The PNS is |
Spinal nerves & Cranial nerves |
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Principal cells of the nervous system |
Neurons & Glia |
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3 types of neuron organization |
Multipolar (most common, multiple processes) Bipolar (two directions of processes) Unipolar (one direct process) |
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Gray Matter |
Cell bodies (neurons) Nuclei (big clusters of gray matter) Cortex (thin cortical ribbon of gray matter) |
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White Matter |
Axons (myelinated and unmyelinated)
Bundles of axons are: fasciculus (little bundle) funiculus (string) lemniscus (ribbon) peduncle (little foot) tract
Cell bodies in PNS (ganglion) |
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Schwann cells are |
The only type of glia in the PNS Needed for insulation (faster info travel) & metabolic support Helps regrow axons if peripheral nerve damage occurs |
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If myelinated, the axons are wrapped with myelin made by ___________ |
oligodendrocytes |
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Astrocytes |
maintain ionic balance of cells transfer metabolites in & out of neurons respond to neural injury by forming scar tissue |
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Ependymal cells |
create the lining of ventricles and CP |
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Microglia |
the immune cells of the brain (become macrophages to eat cellular debris) |
