Question 1

Deoxygenated blood is carried away from the right ventricle by the

Accepted Answer

A)  pulmonary arteries. 
B)  pulmonary veins. 
C)  aorta. 
D)  inferior vena cava. 
E)  pulmonary trunk. 
A)  pulmonary arteries. 
B)  pulmonary veins. 
C)  aorta. 
D)  inferior vena cava. 
E)  pulmonary trunk.

Question 2

Choose the correct statement regarding the atrial reflex.

Accepted Answer

A)  It involves triggering a reflexive decrease in the heart rate through increased parasympathetic activity. 
B)  It involves stimulating pain receptors in the right atrial walls as blood enters the right atrium. 
C)  It involves adjustments in the heart rate in response to an increase in the venous return. 
D)  It involves sympathetic stimulation, which results in increased heart rate. 
E)  It involves parasympathetic stimulation, which increases the heart rate. 
A)  It involves triggering a reflexive decrease in the heart rate through increased parasympathetic activity. 
B)  It involves stimulating pain receptors in the right atrial walls as blood enters the right atrium. 
C)  It involves adjustments in the heart rate in response to an increase in the venous return. 
D)  It involves sympathetic stimulation, which results in increased heart rate. 
E)  It involves parasympathetic stimulation, which increases the heart rate.

Question 3

The loose-fitting sac around the heart is lined by the

Accepted Answer

A)  parietal pericardium. 
B)  epicardium. 
C)  endocardium. 
D)  parietal myocardium. 
E)  parietal endocardium. 
A)  parietal pericardium. 
B)  epicardium. 
C)  endocardium. 
D)  parietal myocardium. 
E)  parietal endocardium.

Question 4

If a decline in blood pressure or oxygen concentrations occurs, the cardiac centers then call for a(n)

Accepted Answer

A)  decrease in cardiac output. 
B)  decrease in sympathetic motor neuron activity. 
C)  decrease in stroke volume. 
D)  increase in parasympathetic motor neuron activity. 
E)  increase in cardiac output. 
A)  decrease in cardiac output. 
B)  decrease in sympathetic motor neuron activity. 
C)  decrease in stroke volume. 
D)  increase in parasympathetic motor neuron activity. 
E)  increase in cardiac output.

Question 5

A disorder resulting from the buildup of fatty deposits in the coronary arteries is called

Accepted Answer

A)  valvular heart disease. 
B)  rheumatic heart disease. 
C)  coronary thrombosis. 
D)  coronary artery disease. 
E)  heart block. 
A)  valvular heart disease. 
B)  rheumatic heart disease. 
C)  coronary thrombosis. 
D)  coronary artery disease. 
E)  heart block.

Question 6

Figure 12-1 Major Internal Landmarks of the Heart
Use Figure 12-1 to identify the labeled part.
-Label C represents the

Accepted Answer

A)  tricuspid valve. 
B)  pulmonary (semilunar) valve. 
C)  aortic (semilunar) valve. 
D)  bicuspid valve. 
E)  left atrioventricular valve. 
A)  tricuspid valve. 
B)  pulmonary (semilunar) valve. 
C)  aortic (semilunar) valve. 
D)  bicuspid valve. 
E)  left atrioventricular valve.

Question 7

Which statement is correct regarding the heart wall?

Accepted Answer

A)  The endothelium consists of cardiac muscle tissue, blood vessels, and nerves. 
B)  The myocardium is comprised of a simple squamous epithelium and an underlying layer of areolar tissue. 
C)  The endocardium is the visceral pericardium. 
D)  The cardiac muscle tissue forms bands that wrap around the ventricles and spiral into the wall of the atria. 
E)  The epicardium is a serous membrane that consists of an exposed epithelium and an underlying layer of areolar tissue. 
A)  The endothelium consists of cardiac muscle tissue, blood vessels, and nerves. 
B)  The myocardium is comprised of a simple squamous epithelium and an underlying layer of areolar tissue. 
C)  The endocardium is the visceral pericardium. 
D)  The cardiac muscle tissue forms bands that wrap around the ventricles and spiral into the wall of the atria. 
E)  The epicardium is a serous membrane that consists of an exposed epithelium and an underlying layer of areolar tissue.

Question 8

The first heart sound ("lubb") is produced as the atrioventricular valves ________ and the semilunar valves ________.

Accepted Answer

A)  open; close 
B)  close; open 
C)  open; open 
D)  close; close 
E)  The actions of the valves do not contribute to the heart sounds. 
A)  open; close 
B)  close; open 
C)  open; open 
D)  close; close 
E)  The actions of the valves do not contribute to the heart sounds.

Question 9

In ECG tracings, extension of the P-R interval to more than 200 msec most likely can indicate which of the following?

Accepted Answer

A)  coronary ischemia or myocardial damage 
B)  congenital heart defect 
C)  electrolyte disturbances 
D)  damage to the conducting pathways 
E)  inadequate blood supply to the heart 
A)  coronary ischemia or myocardial damage 
B)  congenital heart defect 
C)  electrolyte disturbances 
D)  damage to the conducting pathways 
E)  inadequate blood supply to the heart

Question 10

Blood from the systemic circulation returns to the heart by way of the

Accepted Answer

A)  coronary sinus. 
B)  pulmonary veins. 
C)  venae cavae. 
D)  aorta. 
E)  pulmonary arteries. 
A)  coronary sinus. 
B)  pulmonary veins. 
C)  venae cavae. 
D)  aorta. 
E)  pulmonary arteries.

Question 11

Regarding cardiodynamics, which of the following relationships is correct?

Accepted Answer

A)  HR = CO × SV 
B)  SV = CO × HR 
C)  CO = HR/SV 
D)  SV = HR/CO 
E)  CO = HR × SV 
A)  HR = CO × SV 
B)  SV = CO × HR 
C)  CO = HR/SV 
D)  SV = HR/CO 
E)  CO = HR × SV

Question 12

The semilunar valves prevent backflow into the

Accepted Answer

A)  atria. 
B)  aorta. 
C)  ventricles. 
D)  pulmonary trunk. 
E)  venae cavae. 
A)  atria. 
B)  aorta. 
C)  ventricles. 
D)  pulmonary trunk. 
E)  venae cavae.

Question 13

Why is atrial repolarization not illustrated on an ECG?

Accepted Answer

A)  Only ventricles repolarize. 
B)  It is obscured by the T wave. 
C)  Ventricular repolarization occurs at the same time and is much stronger. 
D)  The QRS complex masks it. 
E)  It is illustrated as the P wave. 
A)  Only ventricles repolarize. 
B)  It is obscured by the T wave. 
C)  Ventricular repolarization occurs at the same time and is much stronger. 
D)  The QRS complex masks it. 
E)  It is illustrated as the P wave.

Question 14

During repolarization, ________ ions rush out of the ventricular contractile cell.

Accepted Answer

A)  sodium 
B)  calcium 
C)  magnesium 
D)  selenium 
E)  potassium 
A)  sodium 
B)  calcium 
C)  magnesium 
D)  selenium 
E)  potassium

Question 15

The right atrium receives blood from the systemic circuit and pumps it to the

Accepted Answer

A)  aorta. 
B)  left atrium. 
C)  right ventricle. 
D)  pulmonary trunk. 
E)  muscle tissue of the heart wall. 
A)  aorta. 
B)  left atrium. 
C)  right ventricle. 
D)  pulmonary trunk. 
E)  muscle tissue of the heart wall.

Question 16

Which statement regarding autonomic innervation of the heart is correct?

Accepted Answer

A)  The release of norepinephrine (N
E)  and epinephrine (
E)  by the adrenal medulla decreases the force and degree of contraction. 
B)  Norepinephrine released by sympathetic neurons increases the heart rate. 
C)  Acetylcholine released by parasympathetic neurons results in increased heart rate. 
D)  Parasympathetic release of norepinephrine at synapses in the myocardium result in an increase in stroke volume. 
E)  Acetylcholine released by sympathetic neurons result in an increase in the force of cardiac contractions. 
A)  The release of norepinephrine (N
E)  and epinephrine (
E)  by the adrenal medulla decreases the force and degree of contraction. 
B)  Norepinephrine released by sympathetic neurons increases the heart rate. 
C)  Acetylcholine released by parasympathetic neurons results in increased heart rate. 
D)  Parasympathetic release of norepinephrine at synapses in the myocardium result in an increase in stroke volume. 
E)  Acetylcholine released by sympathetic neurons result in an increase in the force of cardiac contractions.

Question 17

The function of the cardiac skeleton is to

Accepted Answer

A)  convey blood away from the heart. 
B)  supply blood to the muscle tissue of the heart. 
C)  reduce friction between the opposing surfaces of the pericardial sac. 
D)  stabilize the position of the heart valves. 
E)  provide for the movement of ions and small molecules. 
A)  convey blood away from the heart. 
B)  supply blood to the muscle tissue of the heart. 
C)  reduce friction between the opposing surfaces of the pericardial sac. 
D)  stabilize the position of the heart valves. 
E)  provide for the movement of ions and small molecules.

Question 18

The amount of venous blood conveyed to the heart is referred to as the

Accepted Answer

A)  cardiac output. 
B)  venous return. 
C)  stroke volume. 
D)  P-R interval. 
E)  Q-T interval. 
A)  cardiac output. 
B)  venous return. 
C)  stroke volume. 
D)  P-R interval. 
E)  Q-T interval.

Question 19

Blood flowing from the left atrium to the left ventricle flows through the ________ valve.

Accepted Answer

A)  aortic 
B)  tricuspid 
C)  pulmonary 
D)  bicuspid 
E)  papillary 
A)  aortic 
B)  tricuspid 
C)  pulmonary 
D)  bicuspid 
E)  papillary

Question 20

The first blood vessels to branch from the pulmonary trunk are the

Accepted Answer

A)  pulmonary arteries. 
B)  superior vena cavae. 
C)  circumflex arteries. 
D)  coronary arteries. 
E)  pulmonary veins. 
A)  pulmonary arteries. 
B)  superior vena cavae. 
C)  circumflex arteries. 
D)  coronary arteries. 
E)  pulmonary veins.

Deoxygenated blood is carried away from the right ventricle by the

Choose the correct statement regarding the atrial reflex.

The loose-fitting sac around the heart is lined by the

If a decline in blood pressure or oxygen concentrations occurs, the cardiac centers then call for a(n)

A disorder resulting from the buildup of fatty deposits in the coronary arteries is called

Figure 12-1 Major Internal Landmarks of the Heart Use Figure 12-1 to identify the labeled part. -Label C represents the

Which statement is correct regarding the heart wall?

The first heart sound ("lubb") is produced as the atrioventricular valves and the semilunar valves .

In ECG tracings, extension of the P-R interval to more than 200 msec most likely can indicate which of the following?

Blood from the systemic circulation returns to the heart by way of the

Regarding cardiodynamics, which of the following relationships is correct?

The semilunar valves prevent backflow into the

Why is atrial repolarization not illustrated on an ECG?

During repolarization, ________ ions rush out of the ventricular contractile cell.

The right atrium receives blood from the systemic circuit and pumps it to the

Which statement regarding autonomic innervation of the heart is correct?

The function of the cardiac skeleton is to

The amount of venous blood conveyed to the heart is referred to as the

Blood flowing from the left atrium to the left ventricle flows through the ________ valve.

The first blood vessels to branch from the pulmonary trunk are the

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

Cell Structure and Function

The Tissue Level of Organization

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The General and Special Senses

The Endocrine System

The Cardiovascular System: Blood

The Cardiovascular System: Blood Vessels and Circulation

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Exam 12: The Cardiovascular System: the Heart

Deoxygenated blood is carried away from the right ventricle by the

Choose the correct statement regarding the atrial reflex.

The loose-fitting sac around the heart is lined by the

If a decline in blood pressure or oxygen concentrations occurs, the cardiac centers then call for a(n)

A disorder resulting from the buildup of fatty deposits in the coronary arteries is called

Figure 12-1 Major Internal Landmarks of the Heart Use Figure 12-1 to identify the labeled part. -Label C represents the

Which statement is correct regarding the heart wall?

The first heart sound ("lubb") is produced as the atrioventricular valves ________ and the semilunar valves ________.

In ECG tracings, extension of the P-R interval to more than 200 msec most likely can indicate which of the following?

Blood from the systemic circulation returns to the heart by way of the

Regarding cardiodynamics, which of the following relationships is correct?

The semilunar valves prevent backflow into the

Why is atrial repolarization not illustrated on an ECG?

During repolarization, ________ ions rush out of the ventricular contractile cell.

The right atrium receives blood from the systemic circuit and pumps it to the

Which statement regarding autonomic innervation of the heart is correct?

The function of the cardiac skeleton is to

The amount of venous blood conveyed to the heart is referred to as the

Blood flowing from the left atrium to the left ventricle flows through the ________ valve.

The first blood vessels to branch from the pulmonary trunk are the

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

Cell Structure and Function

The Tissue Level of Organization

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The General and Special Senses

The Endocrine System

The Cardiovascular System: Blood

The Cardiovascular System: Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

The Reproductive System

Development and Inheritance

Filters

The first heart sound ("lubb") is produced as the atrioventricular valves and the semilunar valves .