Term
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Definition
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Term
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Definition
| 12 paris of nerves attached to base of brain |
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Term
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Definition
| attaches brain stem and completely encircled by vertebrea column |
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Term
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Definition
| 31 pairs emerging from cord; each serves a specific area on R&L side of body |
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Term
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Definition
| dendrites of sensory neurons or specialized cells that monitor homeostasis |
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Term
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Definition
**INPUT**
Receptors detect internal and external stimuli, which is put into CNS through nerves |
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Term
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Definition
| Analyze, store info, make decisions for apporpriate responses |
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Term
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Definition
**Output**
elicit an appropriate response by activating effectors through nerves |
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Term
| Two types of cells in nervous tissue |
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Definition
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Term
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Definition
| able to respond to a stimulus and convert it into an action potential |
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Term
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Definition
| any change in the internal or external enviroment stong enough to generate an AP |
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Term
Action potential
(impulse) |
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Definition
| electrial signal that travels on a neuron |
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Term
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Definition
short tree like processes sticking out from the cell body
**recieve info** |
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Term
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Definition
contains nucleus and other organelles
**Receive info**
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Term
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Definition
| Long slender projection- sends impulses away from cell body |
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Term
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Definition
site where a neuron and an efector can communicate
Effector can be another neuron, a muslce fiber, or a gland |
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Term
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Definition
at the end of axon terminals
Contain NT |
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Term
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Definition
Make up 1/2 volume of CNS
do not generate impulses
can multiply and divide in mature NS |
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Term
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Definition
Astrocytes
microglia
oligodendrocytes
ependymal
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Term
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Definition
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Term
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Definition
| help to form blood brain barrier |
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Term
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Definition
| engulf foreign microbes and cellular debris |
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Term
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Definition
| produce and maintain myelin sheath of CNS axons |
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Term
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Definition
| line ventricals (open places in the brain with fluid) of the brain and produce CSF and aid in its circulation |
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Term
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Definition
| produce and maintain myelin sheath of PNS axons |
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Term
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Definition
| regulate exchange of material between neurons and Extracellular material |
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