Biology Chapter 19

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Biology Chapter 19 review quiz

  
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  • 1. 
    The human brain weighs about _____ pounds.
    • A. 

      5

    • B. 

      10

    • C. 

      3

    • D. 

      2


  • 2. 
    The brain uses what % of the energy used by the body.
    • A. 

      25

    • B. 

      35

    • C. 

      50

    • D. 

      75


  • 3. 
    The nervous system is made up of cells called
    • A. 

      Cords

    • B. 

      Dendrites

    • C. 

      Neurons

    • D. 

      None of the above


  • 4. 
    This acts as the nervous system's main switchboard.
    • A. 

      Spinal cord

    • B. 

      Brain

    • C. 

      Neurons

    • D. 

      Axons


  • 5. 
    Synapses are
    • A. 

      Cells

    • B. 

      Gaps

    • C. 

      Impulses

    • D. 

      Nerves


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