Question 1

Anastomoses among coronary arterial branches provide collateral routes for blood delivery to the heart muscle.

Accepted Answer

A) True 
 B)False  True

Question 2

Select the correct statement about cardiac output.

Accepted Answer

A)  Decreased venous return will result in increased end diastolic volume. 
B)  Stroke volume increases if end diastolic volume decreases. 
C)  A slow heart rate increases end diastolic volume, stroke volume, and force of contraction. 
D)  If a semilunar valve were partially obstructed, the end systolic volume in the affected ventricle would be decreased. 
A)  Decreased venous return will result in increased end diastolic volume. 
B)  Stroke volume increases if end diastolic volume decreases. 
C)  A slow heart rate increases end diastolic volume, stroke volume, and force of contraction. 
D)  If a semilunar valve were partially obstructed, the end systolic volume in the affected ventricle would be decreased. C

Question 3

An older woman complains of shortness of breath and intermittent fainting spells. Her doctor runs various tests and finds that the atrioventricular (AV) node is not functioning properly. What is the suggested treatment?

Accepted Answer

The suggested treatment is surgery to implant an artificial pacemaker.

Question 4

Select the correct statement about the structure of the heart wall.

Accepted Answer

A)  Connective tissue in the heart wall aids in the conduction of the action potential. 
B)  The fibrous cardiac skeleton forms the bulk of the heart. 
C)  The heart chambers are lined by the endomysium. 
D)  The myocardium is the layer of the heart that actually contracts. 
A)  Connective tissue in the heart wall aids in the conduction of the action potential. 
B)  The fibrous cardiac skeleton forms the bulk of the heart. 
C)  The heart chambers are lined by the endomysium. 
D)  The myocardium is the layer of the heart that actually contracts.

Question 5

Which of the following is NOT an age-related change affecting the heart?

Accepted Answer

A)  thinning of the valve flaps 
B)  atherosclerosis 
C)  fibrosis of cardiac muscle 
D)  decline in cardiac reserve 
A)  thinning of the valve flaps 
B)  atherosclerosis 
C)  fibrosis of cardiac muscle 
D)  decline in cardiac reserve

Question 6

Cardiac muscle has more mitochondria and depends less on a continual supply of oxygen than does skeletal muscle.

Accepted Answer

A) True 
 B)False

Question 7

During the period of ventricular filling__________, .

Accepted Answer

A)  the atria remain in diastole 
B)  the aortic and pulmonary semilunar valves are open 
C)  blood flows mostly passively from the atria through the atrioventricular (AV) valves into the ventricles 
D)  pressure in the heart is at its peak 
A)  the atria remain in diastole 
B)  the aortic and pulmonary semilunar valves are open 
C)  blood flows mostly passively from the atria through the atrioventricular (AV) valves into the ventricles 
D)  pressure in the heart is at its peak

Question 8

Which chambers of the heart contain oxygenated blood?

Accepted Answer

A)  right and left ventricles 
B)  right atrium and ventricle 
C)  left atrium and ventricle 
D)  right and left atria 
A)  right and left ventricles 
B)  right atrium and ventricle 
C)  left atrium and ventricle 
D)  right and left atria

Question 9

Which is most responsible for the synchronized contraction of cardiac muscle tissue?

Accepted Answer

A)  small motor units 
B)  branching cells 
C)  desmosomes 
D)  gap junctions 
A)  small motor units 
B)  branching cells 
C)  desmosomes 
D)  gap junctions

Question 10

The left side of the heart pumps the same volume of blood as the right.

Accepted Answer

A) True 
 B)False

Question 11

During exercise, which of the following would occur on an electrocardiogram (ECG) compared to an individual at rest?

Accepted Answer

A)  the time from one R to the R of the next heartbeat would decrease 
B)  the P-R interval would decrease 
C)  the S-T segment would decrease 
D)  the T wave would decrease 
A)  the time from one R to the R of the next heartbeat would decrease 
B)  the P-R interval would decrease 
C)  the S-T segment would decrease 
D)  the T wave would decrease

Question 12

Which is NOT a vessel that brings blood directly into the right atrium?

Accepted Answer

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

Question 13

Which of the following receive(s) blood during ventricular systole?

Accepted Answer

A)  pulmonary arteries only 
B)  aorta only 
C)  pulmonary veins only 
D)  both the aorta and pulmonary trunk 
A)  pulmonary arteries only 
B)  aorta only 
C)  pulmonary veins only 
D)  both the aorta and pulmonary trunk

Question 14

Which of the following is NOT part of the intrinsic conduction system of the heart?

Accepted Answer

A)  sinoatrial (S
A)  node 
B)  atrioventricular (AV) valve 
C)  atrioventricular (AV) node 
D)  bundle branches 
A)  sinoatrial (S
A)  node 
B)  atrioventricular (AV) valve 
C)  atrioventricular (AV) node 
D)  bundle branches

Question 15

The atrioventricular (AV) valves are closed__________ .

Accepted Answer

A)  when the ventricles are in systole 
B)  by the movement of blood from atria to ventricles 
C)  while the atria are contracting 
D)  when the ventricles are in diastole 
A)  when the ventricles are in systole 
B)  by the movement of blood from atria to ventricles 
C)  while the atria are contracting 
D)  when the ventricles are in diastole

Question 16

Exercise results in skeletal muscles compressing veins which encourages blood to return to the heart. In this scenario, which of the following is correct?

Accepted Answer

A)  end diastolic volume (EDV) decreases 
B)  venous return decreases 
C)  stroke volume decreases 
D)  preload increases 
A)  end diastolic volume (EDV) decreases 
B)  venous return decreases 
C)  stroke volume decreases 
D)  preload increases

Question 17

What is the difference between the auricles and the atria?

Accepted Answer

Auricles are the flaplike appendages att

Question 18

Norepinephrine acts on the heart by__________ .

Accepted Answer

A)  causing a decrease in stroke volume 
B)  causing threshold to be reached more quickly 
C)  decreasing heart contractility 
D)  blocking the action of calcium 
A)  causing a decrease in stroke volume 
B)  causing threshold to be reached more quickly 
C)  decreasing heart contractility 
D)  blocking the action of calcium

Question 19

The Frank-Starling Law states that, if other factors are constant, a __________.

Accepted Answer

A)  higher end diastolic volume will produce a higher stroke volume 
B)  higher stroke volume will produce a higher end diastolic volume 
C)  higher stroke volume will produce a lower end diastolic volume 
D)  higher end diastolic volume will produce a lower stroke volume 
A)  higher end diastolic volume will produce a higher stroke volume 
B)  higher stroke volume will produce a higher end diastolic volume 
C)  higher stroke volume will produce a lower end diastolic volume 
D)  higher end diastolic volume will produce a lower stroke volume

Question 20

A patient is prescribed a calcium channel blocker to prevent angina (chest pain), by decreasing the demand for oxygen. Explain why.

Accepted Answer

By preventing the influx of calcium ions

Anastomoses among coronary arterial branches provide collateral routes for blood delivery to the heart muscle.

Select the correct statement about cardiac output.

An older woman complains of shortness of breath and intermittent fainting spells. Her doctor runs various tests and finds that the atrioventricular (AV) node is not functioning properly. What is the suggested treatment?

Select the correct statement about the structure of the heart wall.

Which of the following is NOT an age-related change affecting the heart?

Cardiac muscle has more mitochondria and depends less on a continual supply of oxygen than does skeletal muscle.

During the period of ventricular filling__________, .

Which chambers of the heart contain oxygenated blood?

Which is most responsible for the synchronized contraction of cardiac muscle tissue?

The left side of the heart pumps the same volume of blood as the right.

During exercise, which of the following would occur on an electrocardiogram (ECG) compared to an individual at rest?

Which is NOT a vessel that brings blood directly into the right atrium?

Which of the following receive(s) blood during ventricular systole?

Which of the following is NOT part of the intrinsic conduction system of the heart?

The atrioventricular (AV) valves are closed__________ .

Exercise results in skeletal muscles compressing veins which encourages blood to return to the heart. In this scenario, which of the following is correct?

What is the difference between the auricles and the atria?

Norepinephrine acts on the heart by__________ .

The Frank-Starling Law states that, if other factors are constant, a __________.

A patient is prescribed a calcium channel blocker to prevent angina (chest pain), by decreasing the demand for oxygen. Explain why.

The Human Body: an Orientation

Chemistry Comes Alive

Cells: the Living Units

Tissue: the Living Fabric

The Integumentary System

Bones and Skeletal Tissues

The Skeleton

Joints

Muscles and Muscle Tissue

The Muscular System

Fundamentals of the Nervous System and Nervous Tissue

The Central Nervous System

The Peripheral Nervous System and Reflex Activity

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood

The Cardiovascular System: Blood Vessels

The Lymphatic System and Lymphoid Organs and Tissues

Filters

Exam 18: The Cardiovascular System: the Heart

Anastomoses among coronary arterial branches provide collateral routes for blood delivery to the heart muscle.

Select the correct statement about cardiac output.

An older woman complains of shortness of breath and intermittent fainting spells. Her doctor runs various tests and finds that the atrioventricular (AV) node is not functioning properly. What is the suggested treatment?

Select the correct statement about the structure of the heart wall.

Which of the following is NOT an age-related change affecting the heart?

Cardiac muscle has more mitochondria and depends less on a continual supply of oxygen than does skeletal muscle.

During the period of ventricular filling__________, .

Which chambers of the heart contain oxygenated blood?

Which is most responsible for the synchronized contraction of cardiac muscle tissue?

The left side of the heart pumps the same volume of blood as the right.

During exercise, which of the following would occur on an electrocardiogram (ECG) compared to an individual at rest?

Which is NOT a vessel that brings blood directly into the right atrium?

Which of the following receive(s) blood during ventricular systole?

Which of the following is NOT part of the intrinsic conduction system of the heart?

The atrioventricular (AV) valves are closed__________ .

Exercise results in skeletal muscles compressing veins which encourages blood to return to the heart. In this scenario, which of the following is correct?

What is the difference between the auricles and the atria?

Norepinephrine acts on the heart by__________ .

The Frank-Starling Law states that, if other factors are constant, a __________.

A patient is prescribed a calcium channel blocker to prevent angina (chest pain), by decreasing the demand for oxygen. Explain why.

The Human Body: an Orientation

Chemistry Comes Alive

Cells: the Living Units

Tissue: the Living Fabric

The Integumentary System

Bones and Skeletal Tissues

The Skeleton

Joints

Muscles and Muscle Tissue

The Muscular System

Fundamentals of the Nervous System and Nervous Tissue

The Central Nervous System

The Peripheral Nervous System and Reflex Activity

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood

The Cardiovascular System: Blood Vessels

The Lymphatic System and Lymphoid Organs and Tissues

Filters