Quiz Neurons

18 Questions

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Cell Quizzes & Trivia

How neurons communicate


Questions and Answers
  • 1. 
    How do neurons communicate?
    • A. 

      Chemical methods

    • B. 

      Electrical methods

    • C. 

      Combination of both

  • 2. 
    An electrical gradient is the
  • 3. 
    Different composition of sodium and potassium is called concentration gradient
    • A. 

      True

    • B. 

      False

  • 4. 
    • A. 

      True

    • B. 

      False

  • 5. 
    When sodium are at ____, channels close ______ channel stays open
  • 6. 
    Sodium can come back in during rest (when cells are not charged)
    • A. 

      True

    • B. 

      False

  • 7. 
    Based on the charge, sodium wants to stay in because of the oppostite charge, but what makes it want to leave
    • A. 

      Concentration gradient

    • B. 

      Electrical gradient

    • C. 

      Resting potential

  • 8. 
    When the cell resists the production of more action potentials this is called
    • A. 

      Relative refractory period

    • B. 

      Refractory period

    • C. 

      Hyperpolarization

  • 9. 
    When a stronger than usual stimulus is needed this is called the relative refractory period
    • A. 

      True

    • B. 

      False

  • 10. 
    we need refractory period to  keep action potential in opposite directions
    • A. 

      True

    • B. 

      False

  • 11. 
    When inside of cell gets more positive, which stimulates neuron this is called _______________ and is associated with ______
  • 12. 
    When the inside of the cell gets more negative this is called _________ which is associated with
  • 13. 
    More Na+ outside neuron than inside, less K+ outside neuron than inside is called concentration gradient
    • A. 

      True

    • B. 

      False

  • 14. 
    The action potential travels down neuron A’s axon via saltatory conduction. The action potential only travels in one direction because of
    • A. 

      Electrical gradient

    • B. 

      Concentration gradient

    • C. 

      Refractory periods

  • 15. 
    Once the action potential reaches the end of theaxon this is called the ____________ terminals
  • 16. 
    Dendrites receive info
    • A. 

      True

    • B. 

      False

  • 17. 
    Axon sends info
    • A. 

      True

    • B. 

      False

  • 18. 
    Describe the all or none law