1. Chapter 18 - The Cardiovascular System: The Heart
Cardiac Output and Control
Heart Anatomy
Pathway of Blood
Heart Conduction
Cardiac Cycle
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FINAL ROUND

2. Heart Anatomy: $100 Question
Cardiac muscle tissue is found in which layer of the heart?
a. Endocardium
b. Myocardium
c. Epicardium
d. Pericardium
ANSWER
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3. Heart Anatomy: $100 Answer
Cardiac muscle tissue is found in which layer of the heart?
a. Endocardium
b. Myocardium
c. Epicardium
d. Pericardium
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4. Heart Anatomy: $200 Question
This valve is found between the right atrium and the right ventricle.
a. Mitral
b. Tricuspid
c. Bicuspid
d. Semilunar
ANSWER
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5. Heart Anatomy: $200 Answer
This valve is found between the right atrium and the right ventricle.
a. Mitral
b. Tricuspid
c. Bicuspid
d. Semilunar
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6. Heart Anatomy: $300 Question
The anterior surface of the heart consists mostly of this chamber.
a. Right atrium
b. Left atrium
c. Right ventricle
d. Left ventricle
ANSWER
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7. Heart Anatomy: $300 Answer
The anterior surface of the heart consists mostly of this chamber.
a. Right atrium
b. Left atrium
c. Right ventricle
d. Left ventricle
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8. Heart Anatomy: $400 Question
These structures prevent prolapse of the atrioventricular valves.
a. Chordae tendineae
b. Crista terminalis
c. Trabeculae carneae
d. Intercalated discs
ANSWER
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9. Heart Anatomy: $400 Answer
These structures prevent prolapse of the atrioventricular valves.
a. Chordae tendineae
b. Crista terminalis
c. Trabeculae carneae
d. Intercalated discs
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10. Heart Anatomy: $500 Question
All of these structures can be identified in the ventricles except:
a. trabeculae carneae.
b. papillary muscles.
c. pectinate muscles.
d. chordae tendineae.
ANSWER
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11. Heart Anatomy: $500 Answer
All of these structures can be identified in the ventricles except:
a. trabeculae carneae.
b. papillary muscles.
c. pectinate muscles.
d. chordae tendineae.
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12. Pathway of Blood: $100 Question
Blood is carried to the heart by these vessels.
a. Arteries
b. Veins
c. Auricles
d. Capillaries
ANSWER
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13. Pathway of Blood: $100 Answer
Blood is carried to the heart by these vessels.
a. Arteries
b. Veins
c. Auricles
d. Capillaries
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14. Pathway of Blood: $200 Question
All oxygenated blood returns to the heart via the:
a. pulmonary artery.
b. pulmonary veins.
c. aorta.
d. venae cavae.
ANSWER
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15. Pathway of Blood: $200 Answer
All oxygenated blood returns to the heart via the:
a. pulmonary artery.
b. pulmonary veins.
c. aorta.
d. venae cavae.
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16. Pathway of Blood: $300 Question
Blood being pumped out of the left ventricle enters the:
a. pulmonary artery.
b. aorta.
c. coronary sinus.
d. venae cavae.
ANSWER
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17. Pathway of Blood: $300 Answer
Blood being pumped out of the left ventricle enters the:
a. pulmonary artery.
b. aorta.
c. coronary sinus.
d. venae cavae.
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18. Pathway of Blood: $400 Question
Blood is prevented from flowing back into the left ventricle by the:
a. aortic semilunar valve.
b. tricuspid valve.
c. pulmonary semilunar valve.
d. mitral valve.
ANSWER
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19. Pathway of Blood: $400 Answer
Blood is prevented from flowing back into the left ventricle by the:
a. aortic semilunar valve.
b. tricuspid valve.
c. pulmonary semilunar valve.
d. mitral valve.
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20. Pathway of Blood: $500 Question
Deoxygenated blood from the myocardium enters the right atrium through the:
a. cardiac veins.
b. coronary arteries.
c. coronary sinus.
d. superior vena cava.
ANSWER
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21. Pathway of Blood: $500 Answer
Deoxygenated blood from the myocardium enters the right atrium through the:
a. cardiac veins.
b. coronary arteries.
c. coronary sinus.
d. superior vena cava.
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22. Heart Conduction: $100 Question
This area is known as the pacemaker of the heart.
a. AV node
b. SA node
c. Bundle of His
d. Purkinje fibers
ANSWER
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23. Heart Conduction: $100 Answer
This area is known as the pacemaker of the heart.
a. AV node
b. SA node
c. Bundle of His
d. Purkinje fibers
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24. Heart Conduction: $200 Question
The bundle of His is located here.
a. Interatrial septum
b. Interventricular septum
c. Floor of the right atrium
d. Apex of the heart
ANSWER
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25. Heart Conduction: $200 Answer
The bundle of His is located here.
a. Interatrial septum
b. Interventricular septum
c. Floor of the right atrium
d. Apex of the heart
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26. Heart Conduction: $300 Question
Atrial repolarization occurs during this period of time, seen on an EKG.
a. P wave
b. QRS complex
c. T wave
d. S-T segment
ANSWER
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27. Heart Conduction: $300 Answer
Atrial repolarization occurs during this period of time, seen on an EKG.
a. P wave
b. QRS complex
c. T wave
d. S-T segment
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28. Heart Conduction: $400 Question
The entire ventricular myocardium is depolarized during this time on an EKG.
a. S-T segment
b. Q-T interval
c. QRS complex
d. T wave
ANSWER
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29. Heart Conduction: $400 Answer
The entire ventricular myocardium is depolarized during this time on an EKG.
a. S-T segment
b. Q-T interval
c. QRS complex
d. T wave
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30. Heart Conduction: $500 Question
Nerve impulses are directly supplied to the papillary muscles by the:
a. SA node.
b. Purkinje fibers.
c. AV node.
d. bundle of His.
ANSWER
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31. Heart Conduction: $500 Answer
Nerve impulses are directly supplied to the papillary muscles by the:
a. SA node.
b. Purkinje fibers.
c. AV node.
d. bundle of His.
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32. Cardiac Cycle: $100 Question
The lub-dup heart sounds heard during auscultation of the heart are associated with:
a. the SA node firing.
b. the heart valves opening.
c. the heart valves closing.
d. blood flowing from the atria to the ventricles.
ANSWER
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33. Cardiac Cycle: $100 Answer
The lub-dup heart sounds heard during auscultation of the heart are associated with:
a. the SA node firing.
b. the heart valves opening.
c. the heart valves closing.
d. blood flowing from the atria to the ventricles.
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34. Cardiac Cycle: $200 Question
All four heart valves are closed during this time.
a. All of ventricular systole
b. All of ventricular diastole
c. Ventricular ejection
d. Isovolumetric contraction
ANSWER
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35. Cardiac Cycle: $200 Answer
All four heart valves are closed during this time.
a. All of ventricular systole
b. All of ventricular diastole
c. Ventricular ejection
d. Isovolumetric contraction
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36. Cardiac Cycle: $300 Question
Blood flow during ventricular filling is most dependent upon ________.
a. pressure changes
b. pumping actions
c. concentration gradients
d. the conduction system
ANSWER
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37. Cardiac Cycle: $300 Answer
Blood flow during ventricular filling is most dependent upon ________.
a. pressure changes
b. pumping actions
c. concentration gradients
d. the conduction system
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38. Cardiac Cycle: $400 Question
During which part of the cardiac cycle would pressure in the ventricle be at its lowest?
a. Mid-diastole
b. Isovolumetric contraction
c. Ventricular ejection
d. Late systole
ANSWER
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39. Cardiac Cycle: $400 Answer
During which part of the cardiac cycle would pressure in the ventricle be at its lowest?
a. Mid-diastole
b. Isovolumetric contraction
c. Ventricular ejection
d. Late systole
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40. Cardiac Cycle: $500 Question
The greatest decrease in ventricular pressure occurs at this time.
a. Isovolumetric contraction
b. Isovolumetric relaxation
c. Ventricular systole
d. Ventricular filling
ANSWER
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41. Cardiac Cycle: $500 Answer
The greatest decrease in ventricular pressure occurs at this time.
a. Isovolumetric contraction
b. Isovolumetric relaxation
c. Ventricular systole
d. Ventricular filling
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42. Cardiac Output and Control: $100 Question
The amount of blood pumped out of each ventricle in one minute is called:
a. stroke volume.
b. cardiac output.
c. cardiac reserve.
d. end diastolic volume.
ANSWER
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43. Cardiac Output and Control: $100 Answer
The amount of blood pumped out of each ventricle in one minute is called:
a. stroke volume.
b. cardiac output.
c. cardiac reserve.
d. end diastolic volume.
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44. Cardiac Output and Control: $200 Question
An increase in heart rate by the sympathetic nervous system is a:
a. positive inotropic effect.
b. negative inotropic effect.
c. positive chronotropic effect.
d. negative chronotropic effect.
ANSWER
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45. Cardiac Output and Control: $200 Answer
An increase in heart rate by the sympathetic nervous system is a:
a. positive inotropic effect.
b. negative inotropic effect.
c. positive chronotropic effect.
d. negative chronotropic effect.
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46. Cardiac Output and Control: $300 Question
An increase in end diastolic volume would have which effect on cardiac output?
a. Increase
b. Decrease
c. No effect
d. Varies from person to person
ANSWER
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47. Cardiac Output and Control: $300 Answer
An increase in end diastolic volume would have which effect on cardiac output?
a. Increase
b. Decrease
c. No effect
d. Varies from person to person
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48. Cardiac Output and Control: $400 Question
The parasympathetic nervous system decreases heart rate by:
a. releasing norepinephrine.
b. opening sodium gates.
c. closing sodium gates.
d. opening potassium gates.
ANSWER
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49. Cardiac Output and Control: $400 Answer
The parasympathetic nervous system decreases heart rate by:
a. releasing norepinephrine.
b. opening sodium gates.
c. closing sodium gates.
d. opening potassium gates.
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50. Cardiac Output and Control: $500 Question
The most important factor for stretching cardiac muscle is:
a. heart rate.
b. end systolic volume.
c. end diastolic volume.
d. stroke volume.
ANSWER
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51. Cardiac Output and Control: $500 Answer
The most important factor for stretching cardiac muscle is:
a. heart rate.
b. end systolic volume.
c. end diastolic volume.
d. stroke volume.
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52. d. all three volumes above.
FINAL ROUND Question
Hypertension can decrease cardiac output by directly causing an increase in:
a. end systolic volume.
b. end diastolic volume.
c. stroke volume.
d. all three volumes above.
ANSWER
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53. d. all three volumes above.
FINAL ROUND Answer
Hypertension can decrease cardiac output by directly causing an increase in:
a. end systolic volume.
b. end diastolic volume.
c. stroke volume.
d. all three volumes above.
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