Nervous System Exam: Biology Quiz!

17 Questions | Total Attempts: 48

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Nervous System Exam: Biology Quiz!

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Questions and Answers
  • 1. 
    Part of a neuron include:
    • A. 

      The axon

    • B. 

      The cell body

    • C. 

      Dendrites

    • D. 

      All of the above

  • 2. 
    Which of the following statements best describes an action potential?
    • A. 

      A sudden reversal of the electrical charge across the membrane of a resting neuron

    • B. 

      A difference in electrical charge across the plasma membrane of a neuron

    • C. 

      A long extension of the cell body that transmits nerve impulses to other cells

    • D. 

      The structural and functional units of the electrical impulse

  • 3. 
    Which of the following can carry nerve impulses from tissues and organs to the spinal cord and brain?
    • A. 

      Interneurons

    • B. 

      Motor neurons

    • C. 

      Sensory neurons

    • D. 

      All of the above

  • 4. 
    Which process maintains the resting potential in a neuron?
    • A. 

      Simple diffusion

    • B. 

      Passive transport involving channel proteins

    • C. 

      Active transport involving the sodium-potassium pump

    • D. 

      Endocytosis and excocytosis

  • 5. 
    The role of the axon is to:
    • A. 

      Receive nerve impulses from other neurons.

    • B. 

      Transmit nerve impulses to other cells.

    • C. 

      Ravel across the synaptic cleft and bind to receptors on the membrane of the other cell.

    • D. 

      Receive chemical signals from other cells.

  • 6. 
    Which statement is true concerning the resting potential?
    • A. 

      The resting potential is the difference in charge across the membrane when the neuron is not actively transmitting a nerve impulse.

    • B. 

      The resting potential is maintained by the sodium-potassium pump.

    • C. 

      At rest, the inside of the neuron is negatively charged, while the fluid surrounding the neuron is positively charged.

    • D. 

      All of the above

  • 7. 
    The motor division of the peripheral nervous system.
    • A. 

      Controls mainly voluntary activities that are under conscious control.

    • B. 

      Involuntary activities not under conscious control.

    • C. 

      Carries impulses that cause glands to secrete hormones.

    • D. 

      All of the above

  • 8. 
    Psychoactive drugs
    • A. 

      Generally influence the transmission of nerve impulses.

    • B. 

      Cause neurons to degenerate.

    • C. 

      Cause abnormal brain functions.

    • D. 

      May cause paralysis and other disabilities.

  • 9. 
    The somatic nervous system:
    • A. 

      Consists of all the nervous tissue that lies outside the central nervous system.

    • B. 

      Consists of nerves connected to glands and internal organs.

    • C. 

      Is made up of nerves that are connected to skeletal muscles.

    • D. 

      Carries sensory information from the body to the central nervous system.

  • 10. 
    To initiate an action potential,
    • A. 

      Potassium ions rush into the cell.

    • B. 

      Sodium ions rush into the cell.

    • C. 

      Sodium ions are pumped into the cell.

    • D. 

      Potassium ions are pumped out of the cell.

  • 11. 
    Which statement is true concerning the brain? (1) The brain contains about 100 million neurons. (2) The brain is the most complex organ of the human body. (3) The brain is the control center of the nervous system. (4) The brain interprets information from the senses. (5) The brain controls breathing and heartbeat.
    • A. 

      1 and 2

    • B. 

      2, 3, and 4

    • C. 

      2, 3, 4, and 5

    • D. 

      All 5 statements are correct.

  • 12. 
    A junction where an axon terminal meets another cell is known as?
    • A. 

      The synapse.

    • B. 

      The neurotransmitter junction.

    • C. 

      The axon terminal junction.

    • D. 

      The axon-dendrite junction.

  • 13. 
    An action potential is necessary for a nerve impulse to occur.
    • A. 

      True

    • B. 

      False

  • 14. 
    The somatic nervous system controls mainly involuntary activities.
    • A. 

      True

    • B. 

      False

  • 15. 
    The synapse releases neurotransmitters, which cross the axon terminal and bind to receptors on the next cell.
    • A. 

      True

    • B. 

      False

  • 16. 
     Your sense of smell contributes to your sense of taste.
    • A. 

      True

    • B. 

      False

  • 17. 
    Coke contains a psychoactive drug.
    • A. 

      True

    • B. 

      False

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