Question 1

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

Question 2

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 needs 
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 needs

Question 3

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. 
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.

Question 4

What vessel exits the left ventricle?

Accepted Answer

A) pulmonary trunk 
B) pulmonary vein 
C) aorta 
D) pulmonary artery 
A) pulmonary trunk 
B) pulmonary vein 
C) aorta 
D) pulmonary artery

Question 5

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 sinus 
A) pulmonary vein 
B) inferior vena cava 
C) superior vena cava 
D) coronary sinus

Question 6

Which of the following events occurs first?

Accepted Answer

A) threshold 
B) depolarization 
C) early repolarization 
D) final repolarization 
E) pacemaker potential 
A) threshold 
B) depolarization 
C) early repolarization 
D) final repolarization 
E) pacemaker potential

Question 7

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. 
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.

Question 8

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. 
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.

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. 
A) attack. 
B) angina. 
C) necrosis. 
D) cirrhosis. 
E) infarction.

Question 10

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 valves 
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 valves

Question 11

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 cells 
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 cells

Question 12

Contraction of the ventricles is referred to as ventricular

Accepted Answer

A) systole. 
B) diastole. 
C) fibrillation. 
D) ischemia. 
E) depolarization. 
A) systole. 
B) diastole. 
C) fibrillation. 
D) ischemia. 
E) depolarization.

Question 13

A direct connection between arteries is called a/an

Accepted Answer

A) auricle. 
B) sulcus. 
C) sinus. 
D) anastamosis. 
A) auricle. 
B) sulcus. 
C) sinus. 
D) anastamosis.

Question 14

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. 
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.

Question 15

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. 
A) ejection. 
B) rapid filling. 
C) atrial systole. 
D) isovolumetric contraction. 
E) active and passive filling.

Question 16

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

Question 17

Another name for the visceral pericardium is the

Accepted Answer

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

Question 18

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. 
A) medulla oblongata. 
B) carotid arteries. 
C) right atrium. 
D) left ventricle. 
E) jugular veins.

Question 19

The P wave of an ECG indicates

Accepted Answer

A) atrial depolarization. 
B) atrial repolarization. 
C) ventricular depolarization. 
D) ventricular repolarization. 
E) threshold. 
A) atrial depolarization. 
B) atrial repolarization. 
C) ventricular depolarization. 
D) ventricular repolarization. 
E) threshold.

Question 20

The pericardial sac is lined with

Accepted Answer

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

Exam 20: Cardiovascular System: the Heart

Why is body temperature sometimes reduced during heart surgery?

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

Mean arterial pressure is

What vessel exits the left ventricle?

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

Which of the following events occurs first?

Stimulation of the heart via the sympathetic nerves would

In a normal electrocardiogram,the

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

Which of the following pairs is mismatched?

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

Contraction of the ventricles is referred to as ventricular

A direct connection between arteries is called a/an

In the cardiac cycle,

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

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

Another name for the visceral pericardium is the

Chemoreceptors sensitive to blood oxygen levels are primarily located in the

The P wave of an ECG indicates

The pericardial sac is lined with

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