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Nervous System (Central Nervous System (CNS) (Gray vs. White Matter (Gray…

- - - - special senses = hearing, equilibrium, vision
      - example: feeling pressure or something touch you
    - - involuntary
      - special senses = taste and smell
      - example: body sensing temperature change and causing one to sweat or shiver
    - - voluntary
      - example: moving arm and leg muscles
    - - autonmoic (involuntary, automatic)
      - examples: iris/ciliary body of eye, sebaceous glands and arrector pili muscles in skin, endocrine glands secreting hormones, exocrine glands secreting through ducts
- - - - Astrocytes = largest, most abundant, connect to blood vessels and neuron processes, maintain chemical environment
      - Microglia = phagocytes of CNS, break down dead/damaged cells, are mobile, search for pathogens
      - Ependymal cells = cuboidal/columnar simple epithelium, line ventricles of brain
        
        cilia circulates cerebral spinal fluid (CSF)
        
        microvilli absorb contens from blood vessels to make CSF, increase surface area, and secrete contents
    - - Satellite cells = structural support for neuron cell bodies, help regulate what enters and leaves cell bodies
        
        located in dorsal root ganglion