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Central Nervous System (Drugs that affect the brain (Alcohol, Anabolic…

- - - - outermost layer
      - dense, irregular CT with many blood vessels and nerves
      - Attached to periosteum
    - - Spider web-like collagen and elastic fiber
      - Thin membrane that lacks blood vessels
      - Subdural space - fluid filled are between dura and subarachnoid matters
    - - Innermost, nearly transparent layer, had many nerves and blood vessels
      - Follows contours of brain and spinal cord
      - Subarachnoid space- area between arachnoid and pia meter; filled with cerebrospinal
- - - - Cell body- contains nucleus and other organelles
      - Dendrites- receiving portions, short, highly branched
      - Axon start as a single fiber but give off branches called collateral axon
      - Function is to send impuslses and signals throughout the nervous system