Question 1

Which of the following factors does NOT influence heart rate?

Accepted Answer

A)  gender 
B)  body temperature 
C)  age 
D)  skin color 
A)  gender 
B)  body temperature 
C)  age 
D)  skin color

Question 2

Define systole and diastole.Which heart chambers are usually referenced when these terms are used?

Accepted Answer

Systole is contraction of the

Question 3

The second heart sound is heard during which phase of the cardiac cycle?

Accepted Answer

A)  ventricular filling 
B)  isovolumetric relaxation 
C)  isovolumetric contraction 
D)  ventricular ejection 
A)  ventricular filling 
B)  isovolumetric relaxation 
C)  isovolumetric contraction 
D)  ventricular ejection

Question 4

A 14-year-old girl undergoing a physical examination prior to being admitted to summer camp was found to have a loud diastolic murmur at the second intercostal space to the left side of the sternum.Explain the reason for the loud heart murmur associated with this girl's condition.

Accepted Answer

The heart murmur is due to inc

Question 5

Explain the role of pacemaker cells in cardiac tissue.

Accepted Answer

Pacemaker cells do not maintain a stable

Question 6

Normal heart sounds are caused by which of the following events?

Accepted Answer

A)  friction of blood against the chamber walls 
B)  closure of the heart valves 
C)  opening of the heart valves 
D)  excitation of the sinoatrial (S
A)  node 
A)  friction of blood against the chamber walls 
B)  closure of the heart valves 
C)  opening of the heart valves 
D)  excitation of the sinoatrial (S
A)  node

Question 7

Match the following:
-An abnormally fast heart rate.

Accepted Answer

A) Bradycardia 
B) Cardiac reserve 
C) Tachycardia 
D) Vagal tone 
A) Bradycardia 
B) Cardiac reserve 
C) Tachycardia 
D) Vagal tone

Question 8

If cardiac muscle is deprived of its normal blood supply,damage would primarily result from ________.

Accepted Answer

A)  decreased delivery of oxygen 
B)  an inadequate supply of lactic acid 
C)  a lack of nutrients to feed into metabolic pathways 
D)  a decrease in the number of available mitochondria for energy production 
A)  decreased delivery of oxygen 
B)  an inadequate supply of lactic acid 
C)  a lack of nutrients to feed into metabolic pathways 
D)  a decrease in the number of available mitochondria for energy production

Question 9

Figure 18.4
Using Figure 18.4, match the following:
-Right atrium.

Accepted Answer

A) A 
B) C 
C) D 
D) B 
E) E 
A) A 
B) C 
C) D 
D) B 
E) E

Question 10

Match the following:
-Difference between resting and maximal cardiac output.

Accepted Answer

A) Bradycardia 
B) Cardiac reserve 
C) Tachycardia 
D) Vagal tone 
A) Bradycardia 
B) Cardiac reserve 
C) Tachycardia 
D) Vagal tone

Question 11

Match the following:
-Heart rate at rest under both autonomic divisions signaling.

Accepted Answer

A) Bradycardia 
B) Cardiac reserve 
C) Tachycardia 
D) Vagal tone 
A) Bradycardia 
B) Cardiac reserve 
C) Tachycardia 
D) Vagal tone

Question 12

Match the following:
-The inner lining of the heart.

Accepted Answer

A) Endocardium 
B) Parietal layer 
C) Myocardium 
D) Epicardium 
A) Endocardium 
B) Parietal layer 
C) Myocardium 
D) Epicardium

Question 13

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

Question 14

The "lub" sounds of the heart are valuable in diagnosis because they provide information about the function of the heart's pulmonary and aortic semilunar valves.

Accepted Answer

A) True 
 B)False

Question 15

Autonomic regulation of heart rate is via two reflex centers found in the pons.

Accepted Answer

A) True 
 B)False

Question 16

While auscultating heart sounds during a checkup,Andy's doctor hears a high-pitched sound during ventricular contraction.Which type of valve could cause this?

Accepted Answer

A)  incompetent tricuspid valve 
B)  deficient pulmonary semilunar valve 
C)  insufficient mitral (bicuspid) valve 
D)  stenotic aortic semilunar valve 
A)  incompetent tricuspid valve 
B)  deficient pulmonary semilunar valve 
C)  insufficient mitral (bicuspid) valve 
D)  stenotic aortic semilunar valve

Question 17

The fact that the left ventricle of the heart is thicker than the right ventricle reveals that it ________.

Accepted Answer

A)  pumps blood against a greater resistance 
B)  expands the thoracic cage 
C)  sends blood through a smaller valve 
D)  pumps a greater volume of blood 
A)  pumps blood against a greater resistance 
B)  expands the thoracic cage 
C)  sends blood through a smaller valve 
D)  pumps a greater volume of blood

Question 18

Match the following:
-Prevents backflow into the right ventricle.

Accepted Answer

A) Aortic semilunar valve 
B) Mitral (bicuspid) valve 
C) Tricuspid valve 
D) Pulmonary semilunar valve 
A) Aortic semilunar valve 
B) Mitral (bicuspid) valve 
C) Tricuspid valve 
D) Pulmonary semilunar valve

Question 19

Match the following:
-Heart muscle.

Accepted Answer

A) Endocardium 
B) Parietal layer 
C) Myocardium 
D) Epicardium 
A) Endocardium 
B) Parietal layer 
C) Myocardium 
D) Epicardium

Question 20

Compared to skeletal muscle,cardiac muscle ________.

Accepted Answer

A)  has more nuclei per cell 
B)  lacks striations 
C)  cells are larger than skeletal muscle cells 
D)  has gap junctions that allow it to act as a functional syncytium 
A)  has more nuclei per cell 
B)  lacks striations 
C)  cells are larger than skeletal muscle cells 
D)  has gap junctions that allow it to act as a functional syncytium

Exam 18: The Cardiovascular System: the Heart

Which of the following factors does NOT influence heart rate?

Define systole and diastole.Which heart chambers are usually referenced when these terms are used?

The second heart sound is heard during which phase of the cardiac cycle?

A 14-year-old girl undergoing a physical examination prior to being admitted to summer camp was found to have a loud diastolic murmur at the second intercostal space to the left side of the sternum.Explain the reason for the loud heart murmur associated with this girl's condition.

Explain the role of pacemaker cells in cardiac tissue.

Normal heart sounds are caused by which of the following events?

Match the following: -An abnormally fast heart rate.

If cardiac muscle is deprived of its normal blood supply,damage would primarily result from ________.

Figure 18.4 Using Figure 18.4, match the following: -Right atrium.

Match the following: -Difference between resting and maximal cardiac output.

Match the following: -Heart rate at rest under both autonomic divisions signaling.

Match the following: -The inner lining of the heart.

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

The "lub" sounds of the heart are valuable in diagnosis because they provide information about the function of the heart's pulmonary and aortic semilunar valves.

Autonomic regulation of heart rate is via two reflex centers found in the pons.

While auscultating heart sounds during a checkup,Andy's doctor hears a high-pitched sound during ventricular contraction.Which type of valve could cause this?

The fact that the left ventricle of the heart is thicker than the right ventricle reveals that it ________.

Match the following: -Prevents backflow into the right ventricle.

Match the following: -Heart muscle.

Compared to skeletal muscle,cardiac muscle ________.

The Human Body: an Orientation

Chemistry Comes Alive

Cells: the Living Units

Tissue: the Living Fabric

The Integumentary System

Bones and Skeletal Tissue

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

The Immune System: Innate and Adaptive Body Defenses

The Respiratory System

The Digestive System

Nutrition,metabolism,and Body Temperature Regulation

The Urinary System

Fluid,electrolyte,and Acid-Base Balance

The Reproductive System

Pregnancy and Human Development

Heredity

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