A&p Nervous System Part 1

35 Questions | Total Attempts: 93

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AP Nervous System Quizzes & Trivia

Questions and Answers
  • 1. 
    List in order the 3 functions of the nervous system 
  • 2. 
    The central nervous system is made up of your 
    • A. 

      Brain and spinal nerves

    • B. 

      Brain and spinal cord

    • C. 

      Network of cranial nerves and spinal nerves

    • D. 

      None of the above

  • 3. 
    The peripheral nervous system is made up of your 
    • A. 

      Cranial nerves and spinal nerves

    • B. 

      Brain and cranial nerves

    • C. 

      All of the above

    • D. 

      None of the above

  • 4. 
    What is the blood-brain barrier 
    • A. 

      Absorbs nutrients, oxygen, hormones, etc from blood steam and transport them to neurons

    • B. 

      Astrocytes create a blood-brain barrier, as the bloodstream never directly contacts neurons

    • C. 

      Both are correct

    • D. 

      None of the above

  • 5. 
    Mark all the shapes of neurons. 
    • A. 

      Bipolar

    • B. 

      Unipolar

    • C. 

      Tripolar

    • D. 

      Multipolar

  • 6. 
    What is the material that insulates a neuron? 
    • A. 

      Cell body

    • B. 

      Motor neurons

    • C. 

      Myelin

    • D. 

      Microglial

  • 7. 
    List the components of a reflex arc. 
  • 8. 
    Explain how one neuron sends a signal to another neuron
  • 9. 
    Define resting potential  
    • A. 

      Once the threshold is reached, the neuron will send a signal

    • B. 

      The inside is more negative than the outside

    • C. 

      The exact electrical charge inside of a normal, inactive neuron

    • D. 

      None of the above

  • 10. 
    What ion triggers the release of neurotransmitters? 
  • 11. 
    Neurotransmitters open sodium ion channels (chemically-gated sodium channels in the cell body.
    • A. 

      True

    • B. 

      False

  • 12. 
    Describe how an action potential travels down an axon. 
  • 13. 
    To reset the charge after an action potential, what opens up? 
    • A. 

      Nothing

    • B. 

      Sodium gates

    • C. 

      Potassium pump

    • D. 

      Potassium gates

  • 14. 
    What happens to neurotransmitters after they open up to a sodium pump?
    • A. 

      Reabsorbed

    • B. 

      Depolarized

    • C. 

      Repolarized

    • D. 

      All of the above

  • 15. 
    Once a neuron reaches threshold potential these open up in sequence
    • A. 

      Voltage-gated potassium channels

    • B. 

      Sodium potassium pump

    • C. 

      Sodium channels

    • D. 

      Voltage-gated sodium channels

  • 16. 
    When neurotransmitters are released and interact with target neurons do neurotransmitters open? 
    • A. 

      Voltage-gated sodium channels

    • B. 

      Chem-gated channels

    • C. 

      Chem-gated sodium channels

    • D. 

      Voltage-gated channels

  • 17. 
    Define saltatory conduction 
    • A. 

      When part of the neuron has sodium ions enter and becomes more positive

    • B. 

      In myelinated neurons, the depolarization "jumps" from one node of Ranvier to the next

    • C. 

      Like muscles, neurons need a stimulus to activate - the stimulus must be strong enough for the neuron to reach its

    • D. 

      None of the above

  • 18. 
    Which is faster? 
    • A. 

      Myelinated neurons

    • B. 

      Unmeyelinated neurons

  • 19. 
    Which happens in myelinated neurons? 
    • A. 

      Depolarizes every part of the axon

    • B. 

      The depolarization "jumps" from one node of Ranvier to the next

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