Sympathetic Nervous System Quiz Questions

10 Questions | Total Attempts: 84

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Sympathetic Nervous System Quiz Questions

Chapter 28 Quiz


Questions and Answers
  • 1. 
    Once the threshold potential is reached
    • A. 

      An action potential is inevitable

    • B. 

      Na+ channels close

    • C. 

      K+ channels open

    • D. 

      The interior of the cell becomes negative with respect to the outside

  • 2. 
    The functional unit of the nervous system is the
    • A. 

      neuron

    • B. 

      Cell body

    • C. 

      Synapse

    • D. 

      Axon

  • 3. 
    The simplest animals to display cephalization and centralization of the nervous system are
    • A. 

      Sponges

    • B. 

      Echinoderms

    • C. 

      Cnidarians

    • D. 

      Flatworms

  • 4. 
    Which of the following results from stimulation by the parasympathetic nervous system?
    • A. 

      Inhibition of urination

    • B. 

      Inhibition of the digestive organs

    • C. 

      Pupil constriction

    • D. 

      Increased heart rate

  • 5. 
    Which of the following statements about resting potential is true?
    • A. 

      A resting membrane allows much more sodium than potassium to diffuse across

    • B. 

      The concentration of sodium is much higher outside the cell than inside

    • C. 

      The resting potential exists because of differences in glucose concentration inside and outside the cell

    • D. 

      The concentration of sodium is much higher inside the cell than outside

  • 6. 
    One neurotransmitter associated with sleep, mood, attention, and learning is
    • A. 

      Epinephrine

    • B. 

      Acetylcholine

    • C. 

      Serotonin

    • D. 

      nitrous oxide

  • 7. 
    Which of the following results from stimulation by the sympathetic nervous system?
    • A. 

      Decreased heart rate

    • B. 

      Increased heart rate

    • C. 

      stimulation of the digestive organs

    • D. 

      Pupil constriction

  • 8. 
    Which division of the human nervous system carries signals to skeletal muscles
    • A. 

      Autonomic nervous system

    • B. 

      Sympathetic nervous system

    • C. 

      Parasympathetic nervous system

    • D. 

      Motor nervous system

  • 9. 
    As the strength of the stimulus changes, the action potential changes in
    • A. 

      Duration

    • B. 

      Amplitude

    • C. 

      Frequency

    • D. 

      Strength

  • 10. 
    The gap between the transmitting and receiving neurons in a chemical synapse is known as the
    • A. 

      Synaptic node

    • B. 

      Synaptic cleft

    • C. 

      Gap junction

    • D. 

      Node of Ranvier

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