ch 12

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  1. Pia Mater
    inner, delicate tissue rich with tiny blood vessels; clings tightly to the surface of the brain, following every condition
  2. arachnoid mater
    middle layer that forms a loose covering that never dips into the cerebral sulci
  3. Cerebrospinal Fluid (CSF)
    • Forms a liquid cushion in and around the brain and spinal cord, giving buoyancy to the CNS
    • Reduces weight of brain by 97%, preventing pressure under its own weight
    • protects the CNS from blows and other trauma helps nourish the brain
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50244
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ch 12
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