A Unique Quiz On : Heart

48 Questions

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Heart Quizzes & Trivia

Welcome to a unique quiz about the most important organ in your body and ours – the heart! Often talked about as the instrument of love within each of us, the heart is actually what controls the flow of blood from one location to the next in your body. What do you know about it?


Questions and Answers
  • 1. 
    This layer of the heart allows it to act as a pump.
    • A. 

      Epicardium

    • B. 

      Myocardium

    • C. 

      Pericardium

    • D. 

      Endocardium

  • 2. 
    This sling-like structure supports the heart
    • A. 

      Pericardium

    • B. 

      Chordae tendinae

    • C. 

      Myocardium

    • D. 

      Endocardium

  • 3. 
    This is the hardest working cardiac chamber and therefore has the thickest myocardium.
    • A. 

      Right atrium

    • B. 

      Right ventricle

    • C. 

      Left atrium

    • D. 

      Left ventricle

  • 4. 
    The right ventricle pumps to the
    • A. 

      Right atrium

    • B. 

      Left veins

    • C. 

      Pulmonary artery

    • D. 

      Aorta

  • 5. 
    Vessel(s) that carry(ies) blood from the pulmonary capillaries to the left atrium
    • A. 

      Aorta

    • B. 

      Pulmonary artery

    • C. 

      Pulmonary veins

    • D. 

      Vena cava

  • 6. 
    The aorta receives blood from the
    • A. 

      Right ventricle

    • B. 

      Pulmonary veins

    • C. 

      Pulmonary artery

    • D. 

      Left ventricle

  • 7. 
    Blood flows from the right atrium through this atriovascular valve to the right ventricle
    • A. 

      Bicuspid

    • B. 

      Mitral

    • C. 

      Pulmonic

    • D. 

      Tricuspid

  • 8. 
    Which of the following structures "sees" unoxygenated blood?
    • A. 

      Aorta

    • B. 

      Left ventricle

    • C. 

      Pulmonary artery

    • D. 

      Pulmonary veins

  • 9. 
    Which of the following "sees" oxygenated blood?
    • A. 

      Vena cava

    • B. 

      Pulmonary veins

    • C. 

      Right atrium

    • D. 

      Pukmonic valve

  • 10. 
    Chordae tendineae are not associated with this valve
    • A. 

      Aortic

    • B. 

      Mitral

    • C. 

      Tricuspid

    • D. 

      Bicuspid

  • 11. 
    With which of the following is "lubb-dupp" associated?
    • A. 

      Myocardial contraction

    • B. 

      Ventricle depolarization

    • C. 

      Closing of heart valves

    • D. 

      Diffusion of O2 from the lungs to the blood in the pulmonary capillaries

  • 12. 
    Which of the following supplies oxygenated blood to the heart muscle?
    • A. 

      Coronary arteries

    • B. 

      Pulmonary arteries

    • C. 

      Pulmonary veins

    • D. 

      Cardiac veins

  • 13. 
    Where does the cardiac action potential (cardiac impulse) normally originate?
    • A. 

      AV node

    • B. 

      Purkinje fibers

    • C. 

      Ectopic focus

    • D. 

      SA node

  • 14. 
    The pacemaker of the heart is located in the upper wall of the
    • A. 

      Right atrium

    • B. 

      Right ventricle

    • C. 

      Left atrium

    • D. 

      Left ventricle

  • 15. 
    Referring to the ECG, the P wave represents
    • A. 

      Atrial contraction

    • B. 

      Ventricular relaxation

    • C. 

      Atrial depolarization

    • D. 

      Atrial repolarization

  • 16. 
    Referring the the ECG, the QRS complex represents
    • A. 

      Ventricular contraction

    • B. 

      Ventricular repolarization

    • C. 

      Ventricular relaxation

    • D. 

      Ventricular depolarization

  • 17. 
    This structure connects the cusps of the AV valves to the ventricles
    • A. 

      Purkinje fibers

    • B. 

      AV node

    • C. 

      Bundle of His

    • D. 

      Chordae tendinae

  • 18. 
    These conducting fibers rapidly spread the electrical signal throughout the ventricles
    • A. 

      Bundle of His

    • B. 

      Purkinje fibers

    • C. 

      SA node

    • D. 

      AV node

  • 19. 
    Which of the following is least related to the mitral valve?
    • A. 

      Left heart

    • B. 

      Biscupid

    • C. 

      Semilunar

    • D. 

      Chordae tendineae

  • 20. 
    All of the following are electrical terms except
    • A. 

      Sarcomere

    • B. 

      Depolarization

    • C. 

      Action potential

    • D. 

      Repolarization

  • 21. 
    Which of the following must precede ventricular contraction?
    • A. 

      Ventricular relaxation

    • B. 

      "lubb-dupp"

    • C. 

      Ventricular depolarization

    • D. 

      Closing of the AV valves

  • 22. 
    Complete the sequence: blood flows from the right atrium to the right ventricle to the pulmonary artery to the
    • A. 

      Pulmonary veins

    • B. 

      Coronary arteries

    • C. 

      Pulmonary capillaries

    • D. 

      Vena cava

  • 23. 
    • A. 

      The P wave

    • B. 

      An increase in the pressure within the right ventricle

    • C. 

      "lubb-dupp"

    • D. 

      Contraction of the chordae tendieae

  • 24. 
    Which layer of the heart has actin, myosin, and intercalated discs?
    • A. 

      Myocardium

    • B. 

      Endocardium

    • C. 

      Epicardium

    • D. 

      Pericardium

  • 25. 
    The pericardium is part of the
    • A. 

      Myocardium

    • B. 

      Diaphragm

    • C. 

      Epicardium

    • D. 

      Endocardium

  • 26. 
    The mitral and the bicuspid valves
    • A. 

      Are semilunar valves

    • B. 

      Are both located o the right side of the heart

    • C. 

      "see" only unoxygenated blood

    • D. 

      Are the same valves

  • 27. 
    The pulmonic and aortic valves
    • A. 

      Are atrioventricular valves

    • B. 

      "see" only oxygenated blood

    • C. 

      Are attached to the ventricular walls by chordae tendinae

    • D. 

      Are semilunar valves

  • 28. 
    Complete the sequence: blood flows from the pulmonary capillaries to the pulmonary veins to the left atrium to the left ventricle to the
    • A. 

      Vena cava

    • B. 

      Pulmonary artery

    • C. 

      Aorta

    • D. 

      Circle of Willis

  • 29. 
    • A. 

      Is the pacemaker of the heart

    • B. 

      Is located in the upper part of the right atrium

    • C. 

      Has a rate that is normally faster than the SA node

    • D. 

      Delays the electrical signal coming from the atria into the ventricles

  • 30. 
    The purpose of this structure is to momentarily delay the spread of the signal from the atrium to the ventricles
    • A. 

      SA node

    • B. 

      Purkinje fibers

    • C. 

      Bundle of His

    • D. 

      AV node

  • 31. 
    Which of the following is an electrical event?
    • A. 

      "lubb-dupp"

    • B. 

      Actin and myosin interaction

    • C. 

      Murmur

    • D. 

      Depolarization

  • 32. 
    • A. 

      The AV valves open

    • B. 

      The semilunar valves close

    • C. 

      Blood is pumped into the pulmonary artery and the aorta

    • D. 

      Blood flows back into the atria

  • 33. 
    Under what condition is blood most likely to flow "backward" (e.g., from the left ventricle back into the left atrium)?
    • A. 

      Pulmonary artery hypertension

    • B. 

      Left ventricular hypertrophy

    • C. 

      An insufficient mitral valve

    • D. 

      Pulmonary edema

  • 34. 
    • A. 

      Pumping blood into great vessels

    • B. 

      Closing their AV valves

    • C. 

      Relaxing

    • D. 

      Opening their semilunar valves

  • 35. 
    The Purkinje Fibers
    • A. 

      Open valves

    • B. 

      Pull on cusps of the valves

    • C. 

      Conduct electrical signals throughout the ventricles

    • D. 

      Close valves

  • 36. 
    Which cavity first receives unoxygenated blood from the vena cava?
    • A. 

      Right ventricle

    • B. 

      Left atrium

    • C. 

      Left ventricle

    • D. 

      Right atrium

  • 37. 
    What is the name of the valve that prevents backflow of blood into the right atrium when the right ventricle contracts?
    • A. 

      Mitral valve

    • B. 

      Pulmonic valve

    • C. 

      Semilunar valve

    • D. 

      Tricuspid valve

  • 38. 
    • A. 

      Closing of the heart valves

    • B. 

      Flow of blood through the coronary arteries

    • C. 

      The electrical signal as it moves through the AV node

    • D. 

      The firing of the autotomic nerves to the SA node

  • 39. 
    • A. 

      The heart is located within the medistinum

    • B. 

      The apex is located left of the sternal midline at the level of the fifth intercostal space.

    • C. 

      The base of the heart is located at the level of the second rib

    • D. 

      The pericardium is composed of actin and myosin

  • 40. 
    • A. 

      Cardiac muscle, composed of actin and myosin arranged in sarcomeres

    • B. 

      Thicker in the ventricles than the atria

    • C. 

      Thicker in the left ventricle than the right ventricle

    • D. 

      Thicker in the left atrium than the right ventricle

  • 41. 
    Which of the following is a function of a valve?
    • A. 

      Regulates the direction of the flow of blood through the heart

    • B. 

      Regulates the amount of oxygen bound to hemoglobin

    • C. 

      Regulates heart rate

    • D. 

      Directs the movement of the cardiac impulse

  • 42. 
    • A. 

      The AV valve is the pacemaker

    • B. 

      In normal sinus rhythm, the electrical signal arises within the SA node

    • C. 

      The His-Purkinje system spreads the electrical system from the right atrium to the left atrium

    • D. 

      The purpose of the AV node is to increase the speed at which the cardiac impulse moves from the atria to the ventricles

  • 43. 
    • A. 

      It is also called the left semilunar valve

    • B. 

      It "sees" oxygenated blood

    • C. 

      Blood flows from the ventricle through this valve into the pulmonary artery

    • D. 

      An incompetent aortic valve allows blood to leak from the aorta back into the left ventricle

  • 44. 
    An accumulation of excess fluid in the pericardial space
    • A. 

      Causes external compression of the heart

    • B. 

      Depresses the SA node, thereby eliminating pacemaker activity

    • C. 

      Causes valvular stenosis

    • D. 

      Causes a left-to-right shunt

  • 45. 
    A hole in the interventricular septum causes
    • A. 

      A right-to-left shunt

    • B. 

      Extreme cyanosis

    • C. 

      Blood to shunt from the left ventricle to the right ventricle

    • D. 

      Blood to shunt from the left ventricle to the pulmonary artery

  • 46. 
    Which group is incorrect?
    • A. 

      Semilunar valves: pulmoni, aortic

    • B. 

      Atrioventricular valves: tricuspid, bicuspid, mitral

    • C. 

      Structures that carry oxygenated blood: pulmonary veins, left ventricle, aorta

    • D. 

      Structures that carry unoxygenated blood: right ventricle, venae cavae, pulmonary veins

  • 47. 
    Which group is incorrect?
    • A. 

      Semilunar valves: pulmoni, aortic

    • B. 

      Structures that carry oxygenated blood: pulmonary veins, left ventricle, aorta

    • C. 

      Layers of the heart: epicardium, myocardium, endocardium

    • D. 

      Abnormal heart rates: tachycardia, bradycardia, normal sinus rhythm

  • 48. 
    • A. 

      Atrioventricular valves: tricuspid, bicuspid, mitral

    • B. 

      Layers of the heart: epicardium, myocardium, endocardium

    • C. 

      Abnormal heart rates: tachycardia, bradycardia

    • D. 

      Parts of the conduction system: SA node, AV node, bundle of His, Purkinje fibers, medulla oblongata