Chapter 20 - The Cardiovascular System: The Heart

46 Questions | Total Attempts: 247

SettingsSettingsSettings
Please wait...
Heart Quizzes & Trivia

The human heart is very complex and contrary to popular belief, it doesn’t not actually require a body to beat it has its own electric impulse. When we give rest to our body, It takes almost six second for the blood to flow from the heart to the lungs and Back. The quiz below is based on chapter 20 on the cardio vascular system. Give it a shot and see just how much you understood.


Questions and Answers
  • 1. 
    The chamber of the heart with the thickest myocardium is the ________.
    • A. 

      Right atrium

    • B. 

      Left atrium

    • C. 

      Right ventricle

    • D. 

      Left ventricle

  • 2. 
    The phase of heart contraction is called _______ and the phase of relaxation is called _____.
    • A. 

      Diastole, systole

    • B. 

      Systole, diastole

  • 3. 
    In auscultation, the lubb represents closing of the semilunar valves and the dubb represents closing of the atrioventricular valves.
    • A. 

      True

    • B. 

      False

  • 4. 
    The Frank-Starling law of the the heart equalizes the output of the right and left ventricles and keeps the same volume of blood flowing to both the systemic and pulmonary circulation.
    • A. 

      True

    • B. 

      False

  • 5. 
    Which of the following is the correct route of blood through the heart from the systemic circulation to the pulmonary circulation and back to the systemic circulation?
    • A. 

      Right atrium, tricuspid valve, right ventricle, pulmonary semilunar valve, left atrium, mitral valve, left ventricle, aortic semilunar valve

    • B. 

      Left atrium, tricuspid valve, left ventricle, pulmonary semilunar valve, right atrium, mitral valve, right ventricle, aortic semilunar valve

    • C. 

      Left atrium, pulmonary semilunar valve, right atrium, tricuspid valve, left ventricle, aortic semilunar valve, right ventricle, mitral valve

    • D. 

      Left ventricle, mitral valve, left atrium, pulmonary semilunar valve, right ventricle, tricuspid valve, right atrium, aortic semilunar valve

    • E. 

      Right atrium, mitral valve, right ventricle, pulmonary semilunar valve, left atrium, tricuspid valve, left ventricle, aortic semilunar valve

  • 6. 
    Which of the following represents the correct pathway for conduction of an action potential through the heart?
    • A. 

      AV node, AV bundle, SA node, Purkinje fibers, bundle branches

    • B. 

      AV node, bundle branches, AV bundle, SA node, Purkinje fibers

    • C. 

      SA node, AV node, AV bundle, bundle branches, Purkinje fibers

    • D. 

      SA node, AV bundle, bundle branches, AV node, Purkinje fibers

    • E. 

      SA node, AV node, Purkinje fibers, bundle branches, AV bundle

  • 7. 
    The external boundary between the atria and ventricles is the _____________.
    • A. 

      Anterior interventricular sulcus.

    • B. 

      Interventricular septum

    • C. 

      Interatrial septum.

    • D. 

      Coronary sulcus.

    • E. 

      Posterior interventricular sulcus

  • 8. 
    A softball player is found to have a resting cardiac output of 5.0 liters per minute and a heart rate of 50 beats per minute.  What is her stroke volume?
    • A. 

      10 mL

    • B. 

      100 mL

    • C. 

      1000 mL

    • D. 

      250 mL

    • E. 

      The information given is insufficient to calculate stroke volume.

  • 9. 
    Which of the following are true?  (1) ANS regulation of heart rate originates in the cardiovascular center of the medulla oblongata. (2) Proprioceptor input is a major stimulus that accounts for the rapid rise in heart rate at the onset of physical activity.  (3) The vagus nerve releases norepinephrine, causing the heart rate to increase.  (4) Hormones from the adrenal medulla and the thyroid gland can increase the heart rate.  (5) Hypothermia increases the heart rate.
    • A. 

      1, 2, 3, 4

    • B. 

      1, 2, 4

    • C. 

      2, 3, 4, 5

    • D. 

      3, 5

    • E. 

      1, 2, 4, 5

  • 10. 
    Which of the following are true concerning action potentials and contraction in the myocardium?  (1) The refractory period in a cardiac muscle fiber is very brief.  (2) The binding of Ca2 to troponin allows the interaction of actin and myosin filaments, resulting in contraction.  (3) Repolarization occurs when the voltage-gated K+ channels open and calcium channels are closing.  (4) Opening of voltage-gated fast Na+ channels results in depolarization. (5) Opening of voltage-gated slow Ca2 channels results in a period of maintained depolarization, known as the plateau.
    • A. 

      1, 3, 5

    • B. 

      2, 3, 4

    • C. 

      2, 5

    • D. 

      3, 4, 5

    • E. 

      2, 3, 4, 5

  • 11. 
    Which of the following would not increase stroke volume? 
    • A. 

      Increased Ca2+ in the interstitial fluid

    • B. 

      Epinephrine

    • C. 

      Increased K+ in the interstitial fluid

    • D. 

      Increase in venous return

    • E. 

      Slow resting heart rate

  • 12. 
    Indicates ventricular repolarization.  Enter 1-6 without spaces/parenthesis. (1) P wave; (2) QRS complex; (3) T wave; (4) P-Q interval; (5) S-T segment; (6) Q-T interval
  • 13. 
    Represents the time from the beginning of ventricular depolarization to the end of ventricular repolarization.Enter 1-6 without spaces/parenthesis. (1) P wave; (2) QRS complex; (3) T wave; (4) P-Q interval; (5) S-T segment; (6) Q-T interval
  • 14. 
    Represents atrial depolarization.Enter 1-6 without spaces/parenthesis. (1) P wave; (2) QRS complex; (3) T wave; (4) P-Q interval; (5) S-T segment; (6) Q-T interval
  • 15. 
    Represents the time when the ventricular contractile fibers are fully depolarized; occurs during the plateau phase of the action potential.Enter 1-6 without spaces/parenthesis. (1) P wave; (2) QRS complex; (3) T wave; (4) P-Q interval; (5) S-T segment; (6) Q-T interval
  • 16. 
    Represents the onset of ventricular depolarization.Enter 1-6 without spaces/parenthesis. (1) P wave; (2) QRS complex; (3) T wave; (4) P-Q interval; (5) S-T segment; (6) Q-T interval
  • 17. 
    Represents the conduction time from the beginning of atrial excitation to the beginning of ventricular excitation.Enter 1-6 without spaces/parenthesis. (1) P wave; (2) QRS complex; (3) T wave; (4) P-Q interval; (5) S-T segment; (6) Q-T interval
  • 18. 
    Collects oxygenated blood from the pulmonary circulation.Enter 1-22 without spaces/parenthesis. (1) right atrium; (2) right ventricle; (3) left atrium; (4) left ventricle; (5) tricuspid valve; (6) bicuspid (mitral) valve; (7) chordae tendinae; (8) auricles; (9) papillary muscles; (10) trabeculae carnae; (11) fibrous pericardium; (12) parietal pericardium; (13) epicardium; (14) myocardium; (15) endocardium; (16) atrioventricular valves; (17) semilunar valves; (18) intercalcalated discs; (19) sulci; (20) septum; (21) fossa ovalis; (22) coronary circulation
  • 19. 
    Pumps deoxygenated blood to lungs for oxygenation.Enter 1-22 without spaces/parenthesis. (1) right atrium; (2) right ventricle; (3) left atrium; (4) left ventricle; (5) tricuspid valve; (6) bicuspid (mitral) valve; (7) chordae tendinae; (8) auricles; (9) papillary muscles; (10) trabeculae carnae; (11) fibrous pericardium; (12) parietal pericardium; (13) epicardium; (14) myocardium; (15) endocardium; (16) atrioventricular valves; (17) semilunar valves; (18) intercalcalated discs; (19) sulci; (20) septum; (21) fossa ovalis; (22) coronary circulation
  • 20. 
    Their contraction pulls on & tightens the chordae tendineae, preventing the valve cusps from everting.Enter 1-22 without spaces/parenthesis. (1) right atrium; (2) right ventricle; (3) left atrium; (4) left ventricle; (5) tricuspid valve; (6) bicuspid (mitral) valve; (7) chordae tendinae; (8) auricles; (9) papillary muscles; (10) trabeculae carnae; (11) fibrous pericardium; (12) parietal pericardium; (13) epicardium; (14) myocardium; (15) endocardium; (16) atrioventricular valves; (17) semilunar valves; (18) intercalcalated discs; (19) sulci; (20) septum; (21) fossa ovalis; (22) coronary circulation
  • 21. 
    Cardiac muscle tissue.Enter 1-22 without spaces/parenthesis. (1) right atrium; (2) right ventricle; (3) left atrium; (4) left ventricle; (5) tricuspid valve; (6) bicuspid (mitral) valve; (7) chordae tendinae; (8) auricles; (9) papillary muscles; (10) trabeculae carnae; (11) fibrous pericardium; (12) parietal pericardium; (13) epicardium; (14) myocardium; (15) endocardium; (16) atrioventricular valves; (17) semilunar valves; (18) intercalcalated discs; (19) sulci; (20) septum; (21) fossa ovalis; (22) coronary circulation
  • 22. 
    Increase blood-holding capacity of the atria.Enter 1-22 without spaces/parenthesis. (1) right atrium; (2) right ventricle; (3) left atrium; (4) left ventricle; (5) tricuspid valve; (6) bicuspid (mitral) valve; (7) chordae tendinae; (8) auricles; (9) papillary muscles; (10) trabeculae carnae; (11) fibrous pericardium; (12) parietal pericardium; (13) epicardium; (14) myocardium; (15) endocardium; (16) atrioventricular valves; (17) semilunar valves; (18) intercalcalated discs; (19) sulci; (20) septum; (21) fossa ovalis; (22) coronary circulation
  • 23. 
    Tendon-like cords connected to the atrioventricular valve cusps which, along with the papillary muscles, prevent valve eversion.Enter 1-22 without spaces/parenthesis. (1) right atrium; (2) right ventricle; (3) left atrium; (4) left ventricle; (5) tricuspid valve; (6) bicuspid (mitral) valve; (7) chordae tendinae; (8) auricles; (9) papillary muscles; (10) trabeculae carnae; (11) fibrous pericardium; (12) parietal pericardium; (13) epicardium; (14) myocardium; (15) endocardium; (16) atrioventricular valves; (17) semilunar valves; (18) intercalcalated discs; (19) sulci; (20) septum; (21) fossa ovalis; (22) coronary circulation
  • 24. 
    The superficial dense irregular connective tissue covering the heart.Enter 1-22 without spaces/parenthesis. (1) right atrium; (2) right ventricle; (3) left atrium; (4) left ventricle; (5) tricuspid valve; (6) bicuspid (mitral) valve; (7) chordae tendinae; (8) auricles; (9) papillary muscles; (10) trabeculae carnae; (11) fibrous pericardium; (12) parietal pericardium; (13) epicardium; (14) myocardium; (15) endocardium; (16) atrioventricular valves; (17) semilunar valves; (18) intercalcalated discs; (19) sulci; (20) septum; (21) fossa ovalis; (22) coronary circulation
  • 25. 
    Outer layer of the serous pericardium; is fused to the fibrous pericardium.Enter 1-22 without spaces/parenthesis. (1) right atrium; (2) right ventricle; (3) left atrium; (4) left ventricle; (5) tricuspid valve; (6) bicuspid (mitral) valve; (7) chordae tendinae; (8) auricles; (9) papillary muscles; (10) trabeculae carnae; (11) fibrous pericardium; (12) parietal pericardium; (13) epicardium; (14) myocardium; (15) endocardium; (16) atrioventricular valves; (17) semilunar valves; (18) intercalcalated discs; (19) sulci; (20) septum; (21) fossa ovalis; (22) coronary circulation
Back to Top Back to top