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Nervous system
Term | Definition |
---|---|
Two divisions in the ANS | Sympathetic division Parasympathetic division |
Sympathetic division: | prepares body to deal with immediate threats. Flight-or-fight response. |
Parasympathetic division | coordinates bodies normal resting activities. Called the "rest-and-repair" division. |
Neuroglia: types/functions | Glia cells helps support neurons. 5 major types |
Microglia | small, stationary cells usually in inflamed brain tissue. -they enlarge and carry out phagocytosis (engulfing inflammatory products) |
Ependymal cells (in CNS) | -form thin fluid-filled cavities in the CNS -some produce the actual fluid, others just aid in circulation of the fluid |
Divisions of the Nervous system: | CNS, PNS, ANS: |
Ependymal cells (in CNS) | -form thin fluid-filled cavities in the CNS -some produce the actual fluid, others just aid in circulation of the fluid |
Afferent (sensory neurons) | conduct impulses to spinal cord or brain. |
Efferent | motor) neurons: conduct impulses away from spinal cord or brain toward muscles or glandular tissues |