Atrioventricular (Av) Valves Quiz Questions

28 Questions | Total Attempts: 161

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Heart Quizzes & Trivia

The Atrioventricular valves perform a very important task in the heart as they prevents blood from flowing back into the atria from the ventricles. Do you know how these valves operate when it comes to breathing and helping the heart meet its function? Why don’t you take up the test below and get to see what you know about atrioventricular valves?


Questions and Answers
  • 1. 
    The heart pumps blood through __________ circuit(s).
    • A. 

      Two

    • B. 

      One

    • C. 

      Four

    • D. 

      Three

  • 2. 
    Vessels that carry blood away from the heart are called
    • A. 

      Capillaries

    • B. 

      Sinusoids

    • C. 

      Veins

    • D. 

      Arteries

  • 3. 
    The heart has __________ chambers.
    • A. 

      One

    • B. 

      Four

    • C. 

      Three

    • D. 

      Two

  • 4. 
    When the heart beats, the __________ contract first.
    • A. 

      Ventricles

    • B. 

      Auricles

    • C. 

      Mitral valve

    • D. 

      Atria

  • 5. 
    The left atrium collects blood from the __________ and empties into the left ventricle.
    • A. 

      Systemic circuit

    • B. 

      Pulmonary circuit

    • C. 

      Portal circuit

    • D. 

      None of the above.

  • 6. 
    The heart is located
    • A. 

      Below the diaphragm.

    • B. 

      Outside the pericardial cavity.

    • C. 

      In the abdominal cavity.

    • D. 

      Near the anterior chest wall.

  • 7. 
    The heart muscle is covered by a membrane, the
    • A. 

      Parietal pericardium.

    • B. 

      Pericardial cavity.

    • C. 

      Visceral pericardium.

    • D. 

      None of the above.

  • 8. 
    The right and left ventricles are separated from one another by the
    • A. 

      Coronary sulcus.

    • B. 

      Anterior interventricular sulcus.

    • C. 

      Posterior interventricular sulcus.

    • D. 

      Both B and C.

  • 9. 
    The expandable outer portion of each atrium is called a(n)
    • A. 

      Semilunar valve.

    • B. 

      Postcava

    • C. 

      Base of the heart.

    • D. 

      Auricle.

  • 10. 
    The right atrium receives blood from the
    • A. 

      Coronary sinus.

    • B. 

      Superior vena cava.

    • C. 

      Inferior vena cava.

    • D. 

      All of the above.

  • 11. 
    The atrioventricular valves permit blood flow
    • A. 

      From the ventricles to the atria only.

    • B. 

      In any direction.

    • C. 

      From the atria to the ventricles only.

    • D. 

      When the heart is in diastole.

  • 12. 
    The right atrioventricular valve is also called the
    • A. 

      Mitral valve.

    • B. 

      Pulmonary semilunar valve.

    • C. 

      Tricuspid valve.

    • D. 

      Bicuspid valve.

  • 13. 
    The free edges of the atrioventricular valves are attached to fibers called
    • A. 

      Papillary muscles

    • B. 

      Liberated fibers.

    • C. 

      Pectinate muscles.

    • D. 

      Chordae tendineae.

  • 14. 
    The moderator band is found in the
    • A. 

      Left atrium.

    • B. 

      Left ventricle.

    • C. 

      Right atrium.

    • D. 

      Right ventricle.

  • 15. 
    The left atrium receives blood from the
    • A. 

      Pulmonary artery.

    • B. 

      Pulmonary veins.

    • C. 

      Aorta

    • D. 

      Vena cava.

  • 16. 
    The left atrioventricular valve is also called the
    • A. 

      Tricuspid

    • B. 

      Bicuspid

    • C. 

      Mitral

    • D. 

      Both B and C.

  • 17. 
    A section through the wall of the heart reveals __________ layer(s).
    • A. 

      Three

    • B. 

      Four

    • C. 

      Two

    • D. 

      One

  • 18. 
    The outer layer of the heart is the
    • A. 

      Endocardium

    • B. 

      Epicardium

    • C. 

      Visceral pericardium.

    • D. 

      Both B and C.

  • 19. 
    There are __________ major arteries supplying blood to the heart.
    • A. 

      One

    • B. 

      Four

    • C. 

      Three

    • D. 

      Two

  • 20. 
    The inner surfaces of the heart are lined with
    • A. 

      Myocardium.

    • B. 

      Endocardium.

    • C. 

      Endomysium

    • D. 

      Epicardium

  • 21. 
    The great cardiac vein drains
    • A. 

      The anterior surface of the ventricles.

    • B. 

      The region supplied by the anterior interventricular artery.

    • C. 

      The right ventricle.

    • D. 

      Both A and B.

  • 22. 
    The action potential of cardiac muscles consists of __________ phases.
    • A. 

      Four

    • B. 

      Three

    • C. 

      Two

    • D. 

      One

  • 23. 
    The phase found only in cardiac muscle is
    • A. 

      Depolarization

    • B. 

      Refractory period.

    • C. 

      Repolarization

    • D. 

      Plateau

  • 24. 
    The plateau in a cardiac muscle action potential is due to
    • A. 

      Leak potassium channels.

    • B. 

      Slow calcium channels.

    • C. 

      Fast sodium channels.

    • D. 

      Fast potassium channels.

  • 25. 
    Action potentials in cardiac muscle cells last about
    • A. 

      250 msec.

    • B. 

      100 msec.

    • C. 

      500 msec.

    • D. 

      10 msec.

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