Cardiovascular System Quiz: How Well You Know? Trivia

27 Questions | Total Attempts: 93

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Cardiovascular System Quiz: How Well You Know? Trivia - Quiz

How well do you know the cardiovascular system? The cardiovascular system transports all kinds of materials, such as carbon dioxide, hormones, and blood cells, to and from the body's tissues to give it nutrients, the ability to fight off certain diseases, stabilize temperature and pH and maintain homeostasis. The cardiovascular system can also be described as the circulatory system. This quiz will help you to build a solid knowledge base of the cardiovascular system.


Questions and Answers
  • 1. 
    An _________ is a graphic representation (recording) of the cardiac cycle.
    • A. 

      Electrocardiogram

    • B. 

      EMG

    • C. 

      Electrocardiograph

    • D. 

      All of the above

    • E. 

      A and C only

  • 2. 
    In an EKG, what represents atrial depolarization?
    • A. 

      QRS Complex

    • B. 

      T Wave

    • C. 

      Baseline

    • D. 

      P Wave

    • E. 

      None of the above

  • 3. 
    Which part of an EKG represents the period when the entire heart returns to its resting or polarized state?
    • A. 

      QRS Complex

    • B. 

      T Wave

    • C. 

      Baseline

    • D. 

      P Wave

    • E. 

      None of the above

  • 4. 
    Which part of the EKG represents ventricular depolarization?
    • A. 

      QRS Complex

    • B. 

      T Wave

    • C. 

      Baseline

    • D. 

      P Wave

    • E. 

      None of the Above

  • 5. 
    Which part of the EKG represents atrial repolarization?
    • A. 

      QRS Complex

    • B. 

      T Wave

    • C. 

      Baseline

    • D. 

      P Wave

    • E. 

      None of the above

  • 6. 
    Which part of the EKG represents ventricular repolarization?
    • A. 

      QRS Complex

    • B. 

      T Wave

    • C. 

      Baseline

    • D. 

      P Wave

    • E. 

      None of the above

  • 7. 
    The QRS complex of an EKG represents the electrical activity associated with the _______ contraction, This complex appears just prior to contraction of the ventricular walls
  • 8. 
    The T Wave of an EKG represents the electrical recovery of the __________. The muscle cells are recovering in preparation for another impulse.
  • 9. 
    _______ is slower than _______, thus the T Wave is more spread out.
  • 10. 
    Atrial repolarization does not appear as a separate wave in the EKG because it is masked by the __________. Atrial repolarization takes place at the same time as ventricular excitation.
  • 11. 
    The S-A and A-V nodes are innervated by the _____________.
  • 12. 
     As the nerve impulses reach their endings they secrete the neurotransmitter _________ which causes a ________ in heart rate.
  • 13. 
    __________ carry impulses continuously. An increase in the parasympathetic impulses would result in a ________ heart rate. A decrease in the parasympathetic impulses would allow the heart rate to ________.
  • 14. 
    ________ originate in the ________ and travel to the heart by means of the _________ nerves and innervate both the S-A and A-V nodes. The endings of these fibers secrete the neurotransmitter ____________. The effect is an ________ in the heart rate and the force of the ____________.
  • 15. 
    The cardiac control center of the _______ maintains a balance between the inhibitory effects of the ___________ fibers and the excitatory effects of the ________ fibers. Masses of neurons in this control center function as either a ______ reflex center or a _______ reflex center.
  • 16. 
    The reflex centers receive ______ impulses from various parts of the _________ and relay _____ impulses to the heart in response to ___________.
  • 17. 
    Pressoreceptors are located in the _____ and the _______, and function to detect changes in ____________.
  • 18. 
    What other four factors can influence heart rate?
  • 19. 
    When emotion affects the heart rate, the cardiac control center is being influenced by impulses from the ______ or the ________. These two centers of the brain may cause the heart rate to _______ when a person faints following an emotional upset or they may also cause the heart rate to ______ during a period of anxiety.
  • 20. 
    During strenous exercise the ________ require an increase in blood supply and the heart rate ____ to meet the demand.
  • 21. 
    Body temperature can influence heart rate. If a person has a fever the heart rate is ______ by a rising body temperature. During hypothermia, however, lowering of the body temperature causes a _____ in the heart rate.
  • 22. 
    Ion concentration influences heart action these ions are ______ and _______ ions. Ordinarily the concentration of these ions are kept within appropriate limits and do not affect the heart adversely. For example, hyperkalemia alters the usual _______ state and results in a _____ in the heart rate and force of contractions which may block the conduction of cardiac impulses and result in _________.
  • 23. 
    An Electrocardiogram represents the electrical changes that occur in the _____ as it contracts and relaxes.
    • A. 

      Endocardium

    • B. 

      Left ventricle

    • C. 

      Right atrium

    • D. 

      Myocardium

    • E. 

      Heart

  • 24. 
    These electrical events occurring in the heart are powerful enough to be detected by placing electrodes on the body surface (skin) as _______ stimulate the cardiac muscle to contract.
    • A. 

      S-A nodes

    • B. 

      A-V nodes

    • C. 

      Sympathetic impulses

    • D. 

      Nerve tissue

    • E. 

      Action potentials

  • 25. 
    The P Wave on an EKG represents the transmission of an electrical impulse from the ________ throughout the _________ and occurs just before the atria contract
    • A. 

      A-V node, atrial myocardium

    • B. 

      S-A node, atrial myocardium

    • C. 

      S-A node, A-V node

    • D. 

      S-A node, heart

    • E. 

      S-A node, myocardium

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