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Nervous System (CNS (Grey Matter (~40%, in gyrus, more superficial, called…

- - - - mobile
      - destroy pathogens
      - phagocytes of CNS
      - clean up dead cells/debris
    - - cuboidal/columnar epithelium
        
        cilia-circulate CSF
        
        microvilli- absorb stuff from blood vessels to make CSF
      - line ventricles
      - create and circulation cerebrospinal fluid
    - - most abundant
      - connected to blood vessels and neuron processes
      - Largest
      - help maintain the correct chemical environment for electrical signal transmission
    - - Myelination of axons in CNS
- - - - structural support
      - helps regulate what enters and leaves the neuron cell body
      - surrounds neuron cell bodies in the dorsal root ganglion
    - - Myelination in PNS
        
        myelinated axon- schwann cell wraps repeatedly around an axon
        
        unmyelinated axon- 1 schwann cell wraps around multiple axons
- - - - Taste
      - Smell
  - - - Body wall
      - Limbs
    - - Equilibrium
      - vision
      - Hearing
- - - - Cardiac muscle
      - Smooth muscle
      - Glands
        
        Exocrine glands
        
        endocrine glands