Bioscience Quiz 2

102 Questions | Total Attempts: 210

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Bioscience Quizzes & Trivia

Review of material for test 2 in bioscience covering the cardiovascular system.


Questions and Answers
  • 1. 
    The cells of the heart are self-excitatory in nature, and thus make the heart a highly efficient pump. 
    • A. 

      True

    • B. 

      False

  • 2. 
    Which of the following slows down conduction of electrical activity across the heart and thus allow for ‘atrial kick’?
    • A. 

      AV node

    • B. 

      SA node

    • C. 

      Purkinje Fibers

    • D. 

      Internodal Pathway

  • 3. 
    The only direct connection between the atria and ventricles is the…
    • A. 

      SA Node

    • B. 

      AV node

    • C. 

      Sinus of Valsava

    • D. 

      Purkinje Fibers

  • 4. 
    Where can the point of maximal impulse (and best auscultation of S1) be found on a normal patient?
    • A. 

      4th right intercostals space

    • B. 

      3rd left intercostals space

    • C. 

      5th left intercostals space

    • D. 

      3rd right intercostals space

  • 5. 
    Congestive heart failure may result in what type of displacement of the point of maximal impulse?
    • A. 

      No displacement at all

    • B. 

      Right displacement

    • C. 

      Cephalad displacement

    • D. 

      Lateral displacement

  • 6. 
    Which of the following has the thickest myocardial layer?
    • A. 

      Left ventricle

    • B. 

      Right Ventricle

    • C. 

      Left Atria

    • D. 

      Right Atria

  • 7. 
    A patient with pulmonary hypertension may also experience ________ due to increased resistance to blood flow.
    • A. 

      Left ventricular hypertrophy

    • B. 

      Right ventricular hypertrophy

    • C. 

      Left Atrial thickening

    • D. 

      None of above

  • 8. 
    Which layer of the cardiac musculature provides strength during contraction?
    • A. 

      Epicardium

    • B. 

      Endocardium

    • C. 

      Myocardium

    • D. 

      Pericardium

  • 9. 
    Which layer of the cardiac musculature consists of an endothelium and a layer of connective tissue?
    • A. 

      Epicardium

    • B. 

      Pericardium

    • C. 

      Myocardium

    • D. 

      Endocardium

  • 10. 
    Will a patient with tricuspid valve area of 7cm2 exhibit any signs of tricuspid insufficiency?
    • A. 

      No, because that’s the normal area

    • B. 

      No, not enough narrowing to exhibit symptoms yet

    • C. 

      Yes

  • 11. 
    Which of the following would be a normal surface area for the mitral valve?
    • A. 

      7 cm2

    • B. 

      5 cm2

    • C. 

      3 cm2

    • D. 

      8 cm2

  • 12. 
    What is the function of the sinus of Valsalva?
    • A. 

      It is a Specialized conduction pathways readily spreads electrical activity from one atrium to the other

    • B. 

      It is the fixation point for cardiac musculature and plays an important role in the structure, function, and efficiency of the heart

    • C. 

      Acts as a reservoir for oxygenated blood from pulmonary veins

    • D. 

      Allows aortic valve to open fully without compromising blood flow to myocardium.

  • 13. 
    After perfusing the myocardium, blood returns to the right atrium via the…
    • A. 

      Coronary Sinus

    • B. 

      Internodal Pathways

    • C. 

      Left circumflex artery

    • D. 

      Sinus of Vasalva

  • 14. 
    The AV node receives its blood supply from what artery in the majority of patients?
    • A. 

      Left Anterior descending artery

    • B. 

      Right Coronary Artery

    • C. 

      Circumflex Artery

    • D. 

      Coronary Sinus

  • 15. 
    Which of the following is not one of three major venous drainage routes in the heart?
    • A. 

      Coronary Sinus

    • B. 

      Anterior Cardiac Veins

    • C. 

      Obtuse marginal vein

    • D. 

      Thebesian veins

  • 16. 
    A patient with decreased diastolic BP may experience which of the following?
    • A. 

      Supraventricular tachycardia

    • B. 

      Decreased right ventricular perfusion

    • C. 

      Increased aortic pressure

    • D. 

      Decreased left ventricular perfusion

  • 17. 
    Which layer of the cardiac musculature is most vulnerable to ischemia during episodes of decreased coronary perfusion?
    • A. 

      Endocardium

    • B. 

      Myocardium

    • C. 

      Epicardium

    • D. 

      Pericardium

  • 18. 
    An increase in myocardial oxygen demand will have what effect on heart rate?
    • A. 

      No effect, as myocardium can extract more oxygen from hemoglobin

    • B. 

      Increased heart rate to increase coronary blood flow

    • C. 

      Decrease heart rate to allow greater filling time

    • D. 

      All the above are possible

  • 19. 
    Volatile anesthetic agents will cause coronary vasoconstriction and decrease myocardial oxygen demand. 
    • A. 

      True

    • B. 

      False

  • 20. 
    Atrial kick contributes how much to ventricular filling?
    • A. 

      10-15%

    • B. 

      40-50%

    • C. 

      20-30%

    • D. 

      35-40%

  • 21. 
    Which of the following does not directly affect ventricular performance?
    • A. 

      Preload

    • B. 

      Afterload

    • C. 

      Heart Rate

    • D. 

      Coronary Perfusion

  • 22. 
    End diastolic left ventricular volume is also known as what?
    • A. 

      Preload

    • B. 

      Afterload

    • C. 

      SVR

    • D. 

      Cardiac Index

  • 23. 
    Acute ETOH intoxication will have what effect on ventricular performance?
    • A. 

      Increase contractility

    • B. 

      Decrease contractility

    • C. 

      Cause irregular ventricular rate

    • D. 

      Decrease heart rate

  • 24. 
    Which of the following would be a normal cardiac output?
    • A. 

      3 L/min

    • B. 

      950 dynes

    • C. 

      6 L/min

    • D. 

      10 L/min

  • 25. 
    How would Mitral valve stenosis affect cardiac output?
    • A. 

      Decrease CO by increasing afterload

    • B. 

      Increase CO through incomplete closure of valve

    • C. 

      No change on CO

    • D. 

      Decrease CO through decrease in preload