Question 1

Mitral valve prolapse causes blood to leak back into the ________ when the ventricles contract.

Accepted Answer

A)   left atrium
B)   right atrium
C)   aorta
D)   pulmonary trunk
E)   pulmonary arteriesF) A) and B)
G) B) and D)

Question 2

What must occur during exercise to ensure adequate oxygen delivery to cardiac muscle?

Accepted Answer

A)   An increased oxygen release to cardiac muscle
B)   A decreased oxygen content to skeletal muscle
C)   Decreased heart rate
D)   Increased coronary blood flowE) A) and C)
F) A) and B)

Question 3

Where is blood moving during the period of ejection?

Accepted Answer

A)   Ventricles to atria
B)   Ventricles to great vessels
C)   Atria to ventricles
D)   Atria to great vessels
E)   Great vessels to ventriclesF) A) and E)
G) None of the above

Question 4

The procedure whereby a small balloon is placed into a partially occluded coronary artery and then inflated to increase blood flow through the artery is called a/an ________.

Accepted Answer

A)   angioplasty
B)   coronary bypass
C)   urokinase injection
D)   tissue plasminogen activation
E)   angiogramF) None of the above
G) A) and B)

Question 5

What occurs during the time between the first heart sound and the second heart sound?

Accepted Answer

A)   Ventricular systole
B)   Ventricular diastole
C)   Ventricular filling
D)   Atrial systole
E)   The P wave of the ECGF) B) and C)
G) A) and E)

Question 6

What event(s)  occur during the QRS complex of an electrocardiogram?

Accepted Answer

A)   Depolarization of the atria
B)   Repolarization of the ventricles
C)   Depolarization of the atria and repolarization of the ventricles
D)   Depolarization of the ventricles and repolarization of the atriaE) All of the above
F) A) and B)

Question 7

Which of the following statements accurately describes the pattern of ventricular contraction?

Accepted Answer

A)   The ventricles contract from the base toward the apex moving blood into the great arteries located inferior to the ventricles.
B)   The ventricles contract from the apex toward the base moving blood into the great arteries located inferior to the ventricles.
C)   The ventricles contract from the apex toward the base moving blood into the great arteries located superior to the ventricles.
D)   The ventricles contract from the base toward the apex moving blood into the great arteries located superior to the ventricles.E) A) and B)
F) B) and C)

Question 8

Of the types of damage resulting from a myocardial infarction, which is most likely to cause the greatest increase in the Q-T interval?

Accepted Answer

A)   Infarction in the AV node
B)   Left bundle branch block
C)   Infarction affecting the SA node
D)   Tachycardia
E)   Ectopic focusF) B) and E)
G) A) and B)

Question 9

Blood in the pulmonary veins returns to the

Accepted Answer

A)   right atrium.
B)   left atrium.
C)   right ventricle.
D)   left ventricle.
E)   coronary sinus.F) B) and D)
G) All of the above

Question 10

When ventricular pressure exceeds atrial pressure, the

Accepted Answer

A)   ejection occurs.
B)   atria pump blood into the ventricles.
C)   ventricle is in diastole.
D)   blood is pumped into the atrium.
E)   AV valves close.F) A) and E)
G) All of the above

Question 11

Contraction of the ventricles is referred to as ventricular ________.

Accepted Answer

A)   systole
B)   diastole
C)   fibrillation
D)   ischemia
E)   depolarizationF) All of the above
G) A) and B)

Question 12

Which of the following factors would cause an increase in heart rate?

Accepted Answer

A)   Increased parasympathetic stimulation
B)   Stimulation of baroreceptors in the aorta
C)   Increased epinephrine release from the adrenal medulla
D)   Increased production of atrial natriuretic factor
E)   Stimulation through the vagus nerveF) A) and D)
G) None of the above

Question 13

The valve located between the right ventricle and the pulmonary trunk is the

Accepted Answer

A)   aortic semilunar valve.
B)   pulmonary semilunar valve.
C)   tricuspid valve.
D)   mitral valve.
E)   bicuspid valve.F) C) and D)
G) A) and D)

Question 14

Blood in the superior vena cava will enter the ________.

Accepted Answer

A)   aorta
B)   right atrium
C)   pulmonary trunk
D)   pulmonary arteries
E)   pulmonary veinsF) B) and C)
G) A) and C)

Question 15

Atrial systole begins ________.

Accepted Answer

A)   immediately before the P wave
B)   immediately after the P wave
C)   during the Q wave
D)   during the S-T segment
E)   immediately after the T waveF) A) and C)
G) B) and D)

Question 16

Which of the following is NOT a function of the heart?

Accepted Answer

A)   Providing a location for gas exchange between oxygen and carbon dioxide
B)   Regulating blood supply to tissues depending on need
C)   Generating blood pressure through contraction
D)   Routing blood to either the pulmonary circulation or the systemic circulationE) A) and B)
F) All of the above

Question 17

The volume of blood pumped during each cardiac cycle is the

Accepted Answer

A)   stroke volume.
B)   cardiac output.
C)   cardiac reserve.
D)   end-systolic volume.
E)   end-diastolic volume.F) All of the above
G) A) and B)

Question 18

All of the following cardiac measurements will increase during exercise except ________.

Accepted Answer

A)   end-diastolic volume
B)   end-systolic volume
C)   stroke volume
D)   cardiac outputE) C) and D)
F) B) and D)

Question 19

Afterload is

Accepted Answer

A)   the name given to an increase in end-diastolic volume.
B)   the arterial pressure that the ventricles must overcome to eject blood.
C)   the amount cardiac output must increase during exercise.
D)   another name for venous return.
E)   the extent to which ventricular walls are stretched.F) All of the above
G) C) and D)

Question 20

Baroreceptor reflexes

Accepted Answer

A)   are triggered by increased blood osmolality.
B)   correct changes in blood pH.
C)   do not impact the activity of the heart.
D)   are of minor importance in humans.
E)   can change heart rate.F) C) and E)
G) C) and D)

Exam 20: Cardiovascular System: the Heart

Atrial systole begins ________.

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Baroreceptor reflexes

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The volume of blood pumped during each cardiac cycle is the

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Which of the following factors would cause an increase in heart rate?

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Mitral valve prolapse causes blood to leak back into the ________ when the ventricles contract.

Correct AnswerverifiedShow Answer

What occurs during the time between the first heart sound and the second heart sound?

Correct AnswerverifiedShow Answer

The procedure whereby a small balloon is placed into a partially occluded coronary artery and then inflated to increase blood flow through the artery is called a/an ________.

Correct AnswerverifiedShow Answer

Afterload is

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What must occur during exercise to ensure adequate oxygen delivery to cardiac muscle?

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All of the following cardiac measurements will increase during exercise except ________.

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Blood in the pulmonary veins returns to the

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Which of the following statements accurately describes the pattern of ventricular contraction?

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When ventricular pressure exceeds atrial pressure, the

Correct AnswerverifiedShow Answer

What event(s) occur during the QRS complex of an electrocardiogram?

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Of the types of damage resulting from a myocardial infarction, which is most likely to cause the greatest increase in the Q-T interval?

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Where is blood moving during the period of ejection?

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Contraction of the ventricles is referred to as ventricular ________.

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The valve located between the right ventricle and the pulmonary trunk is the

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Blood in the superior vena cava will enter the ________.

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Which of the following is NOT a function of the heart?

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