Question 1

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

Accepted Answer

A) True 
 B)False

Question 2

Which vessel(s) of the heart receive(s) blood during right ventricular systole?

Accepted Answer

A)  pulmonary veins 
B)  pulmonary trunk 
C)  aorta 
D)  venae cavae 
A)  pulmonary veins 
B)  pulmonary trunk 
C)  aorta 
D)  venae cavae

Question 3

A foramen ovale .

Accepted Answer

A)  connects the two atria in the fetal heart 
B)  is a shallow depression in the interventricular septum 
C)  is a condition in which the heart valves do not completely close 
D)  is a connection between the pulmonary trunk and the aorta in the fetus 
A)  connects the two atria in the fetal heart 
B)  is a shallow depression in the interventricular septum 
C)  is a condition in which the heart valves do not completely close 
D)  is a connection between the pulmonary trunk and the aorta in the fetus

Question 4

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

Accepted Answer

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

Question 5

If the vagal nerves to the heart were cut, the result would be that _.

Accepted Answer

A)  the AV node would become the pacemaker of the heart 
B)  the heart would stop, since the vagal nerves trigger the heart to contract 
C)  the heart rate would increase by about 25 beats per minute 
D)  parasympathetic stimulation would increase, causing a decrease in heart rate 
A)  the AV node would become the pacemaker of the heart 
B)  the heart would stop, since the vagal nerves trigger the heart to contract 
C)  the heart rate would increase by about 25 beats per minute 
D)  parasympathetic stimulation would increase, causing a decrease in heart rate

Question 6

When heart valve replacement is required, the _ valve is the most likely valve that needs to be replaced.

Accepted Answer

The answer of When heart valve replacement is required, the...

Question 7

Figure 18.3Using Figure 18.3, match the following:
-Junctional rhythm.

Accepted Answer

The answer of   Figure 18.3Using Figure 18.3, match...

Question 8

Damage to the is referred to as heart block.

Accepted Answer

A)  AV valves 
B)  SA node 
C)  AV node 
D)  AV bundle 
A)  AV valves 
B)  SA node 
C)  AV node 
D)  AV bundle

Question 9

The papillary muscles contract after the other ventricular muscles so that they can take up the slack on the chordae tendineae before the full force of ventricular contractions sends blood against the AV valve flaps.

Accepted Answer

A) True 
 B)False

Question 10

Commotio cordis is heart failure due to a .

Accepted Answer

A)  loss of blood from an artery 
B)  mild electrical shock to the heart itself 
C)  severe electrical shock to the body 
D)  relatively mild blow to the chest that occurs during a vulnerable interval (2 ms) when the heart is repolarizing 
A)  loss of blood from an artery 
B)  mild electrical shock to the heart itself 
C)  severe electrical shock to the body 
D)  relatively mild blow to the chest that occurs during a vulnerable interval (2 ms) when the heart is repolarizing

Question 11

The heart is called a "double pump" because there are two functionally separate circulations. Trace the pathway of each of these circulations and include the following information: heart chambers involved, major blood vessels involved, and general areas through which the blood flows. Begin with the right atrium.

Accepted Answer

Right atrium to right ventricl

Question 12

Explain autorhythmicity in cardiac muscle cells.

Accepted Answer

Autorhythmic cells do not maintain a sta

Question 13

Blood within the pulmonary veins returns to the .

Accepted Answer

A)  left ventricle 
B)  left atrium 
C)  right ventricle 
D)  right atrium 
A)  left ventricle 
B)  left atrium 
C)  right ventricle 
D)  right atrium

Question 14

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

Accepted Answer

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

Exam 18: The Cardiovascular System: the Heart

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

Which vessel(s) of the heart receive(s) blood during right ventricular systole?

A foramen ovale .

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

If the vagal nerves to the heart were cut, the result would be that _.

When heart valve replacement is required, the _ valve is the most likely valve that needs to be replaced.

Figure 18.3Using Figure 18.3, match the following: -Junctional rhythm.

Damage to the is referred to as heart block.

The papillary muscles contract after the other ventricular muscles so that they can take up the slack on the chordae tendineae before the full force of ventricular contractions sends blood against the AV valve flaps.

Commotio cordis is heart failure due to a .

Explain autorhythmicity in cardiac muscle cells.

Blood within the pulmonary veins returns to the .

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

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

The Immune System: Innate and Adaptive Body Defensives

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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