Question 1

Stimulation of the heart via the sympathetic nerves would

Accepted Answer

A)  decrease heart rate.
B)  decrease stroke volume.
C)  increase the force of ventricular contraction.
D)  increase end-systolic volume.
E)  not affect heart rate and force of contraction.F) B) and C)
G) C) and E)

Question 2

Contraction of the ventricles is referred to as ventricular

Accepted Answer

A)  systole.
B)  diastole.
C)  fibrillation.
D)  ischemia.
E)  depolarization.F) C) and E)
G) None of the above

Question 3

Chemoreceptors sensitive to blood oxygen levels are primarily located in the

Accepted Answer

A)  medulla oblongata.
B)  carotid arteries.
C)  right atrium.
D)  left ventricle.
E)  jugular veins.F) None of the above
G) D) and E)

Question 4

All of the following are functions of the heart,except _____________________.

Accepted Answer

A)   generating blood pressure
B)   separating pulmonary and systemic circulations
C)   moving blood in one direction
D)   adjusting blood supply,depending on tissue needs
E)   adjusting blood gas levels,depending on tissue needsF) None of the above
G) A) and C)

Question 5

Another name for the visceral pericardium is the

Accepted Answer

A)  endocardium.
B)  epicardium.
C)  isocardium.
D)  myocardium.
E)  visocardium.F) C) and E)
G) C) and D)

Question 6

Blood does not enter or leave the ventricles during the period called

Accepted Answer

A)  ejection.
B)  rapid filling.
C)  atrial systole.
D)  isovolumetric contraction.
E)  active and passive filling.F) None of the above
G) B) and E)

Question 7

Mean arterial pressure is

Accepted Answer

A)  cardiac output times peripheral resistance.
B)  end-diastolic volume minus end-systolic volume.
C)  maximum cardiac output minus cardiac output when at rest.
D)  heart rate times stroke volume.
E)  stroke volume times peripheral resistance.F) C) and E)
G) B) and C)

Question 8

All of the following structural changes found in the heart occur with the normal aging process,except ___________________.

Accepted Answer

A)   hypertrophy of the left ventricle
B)   decreased elasticity of large vessels
C)   decreased valve flexibility
D)   increased elasticity of large vessels
E)   atrophy of conduction cellsF) C) and D)
G) A) and C)

Question 9

Coronary artery disease can diminish myocardial blood flow resulting in the death of myocardial cells.This condition is known as a myocardial

Accepted Answer

A)  attack.
B)  angina.
C)  necrosis.
D)  cirrhosis.
E)  infarction.F) B) and D)
G) All of the above

Question 10

The pericardial sac is lined with

Accepted Answer

A)  fibrous pericardium.
B)  parietal pericardium.
C)  visceral pericardium.
D)  myocardium.
E)  epicardium.F) A) and B)
G) A) and C)

Question 11

The P wave of an ECG indicates

Accepted Answer

A)  atrial depolarization.
B)  atrial repolarization.
C)  ventricular depolarization.
D)  ventricular repolarization.
E)  threshold.F) All of the above
G) A) and B)

Question 12

The great cardiac vein and middle cardiac vein empty into a venous cavity called the

Accepted Answer

A)  pulmonary vein.
B)  inferior vena cava.
C)  superior vena cava.
D)  coronary sinus.
E)  coronary artery.F) C) and E)
G) A) and E)

Question 13

What vessel exits the left ventricle?

Accepted Answer

A)  pulmonary trunk
B)  pulmonary vein
C)  aorta
D)  pulmonary arteryE) All of the above
F) A) and C)

Question 14

Why is body temperature sometimes reduced during heart surgery?

Accepted Answer

A)  to slow respiration
B)  to increase heart rate
C)  to decrease heart rate
D)  to increase the oxygen content of bloodE) A) and B)
F) A) and C)

Question 15

A direct connection between arteries is called a/an

Accepted Answer

A)  auricle.
B)  sulcus.
C)  sinus.
D)  anastamosis.E) B) and D)
F) A) and D)

Question 16

Which of the following pairs is mismatched?

Accepted Answer

A)  endocardium - covers the inner surfaces of the heart
B)  myocardium - cardiac muscle
C)  trabeculae carneae - interior walls of ventricles
D)  pectinate muscles - muscles that close valves
E)  chordae tendineae - connective tissue strings that connect to cusps of valvesF) A) and E)
G) B) and D)

Question 17

Which of the following events occurs first?

Accepted Answer

A)  threshold
B)  depolarization
C)  early repolarization
D)  final repolarization
E)  pacemaker potentialF) B) and C)
G) A) and B)

Question 18

Which of the following is NOT a major opening into the right atrium?

Accepted Answer

A)  pulmonary vein
B)  inferior vena cava
C)  superior vena cava
D)  coronary sinusE) A) and C)
F) B) and C)

Question 19

In the cardiac cycle,

Accepted Answer

A)  the right atrium and the right ventricle contract simultaneously.
B)  the left atrium contracts before the right atrium.
C)  all four chambers of the heart contract at the same time.
D)  all four chambers of the heart are in diastole at the same time.E) All of the above
F) A) and D)

Question 20

In a normal electrocardiogram,the

Accepted Answer

A)  P wave results from repolarization of the atria.
B)  QRS complex results from ventricular depolarization.
C)  P wave occurs after the QRS complex but before the T wave.
D)  T wave represents depolarization of the atria.
E)  repolarization of the atria is clearly visible.F) B) and E)
G) B) and D)

Exam 20: Cardiovascular System: the Heart

A direct connection between arteries is called a/an

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The pericardial sac is lined with

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Which of the following is NOT a major opening into the right atrium?

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In the cardiac cycle,

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All of the following structural changes found in the heart occur with the normal aging process,except ___________________.

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Which of the following events occurs first?

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Another name for the visceral pericardium is the

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Which of the following pairs is mismatched?

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All of the following are functions of the heart,except _____________________.

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Blood does not enter or leave the ventricles during the period called

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What vessel exits the left ventricle?

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Coronary artery disease can diminish myocardial blood flow resulting in the death of myocardial cells.This condition is known as a myocardial

Correct AnswerverifiedShow Answer

Contraction of the ventricles is referred to as ventricular

Correct AnswerverifiedShow Answer

The great cardiac vein and middle cardiac vein empty into a venous cavity called the

Correct AnswerverifiedShow Answer

Chemoreceptors sensitive to blood oxygen levels are primarily located in the

Correct AnswerverifiedShow Answer

In a normal electrocardiogram,the

Correct AnswerverifiedShow Answer

Mean arterial pressure is

Correct AnswerverifiedShow Answer

Why is body temperature sometimes reduced during heart surgery?

Correct AnswerverifiedShow Answer

The P wave of an ECG indicates

Correct AnswerverifiedShow Answer

Stimulation of the heart via the sympathetic nerves would

Correct AnswerverifiedShow Answer

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