Question 1

The volume of blood discharged from the ventricle in a minute is called __________.

Accepted Answer

A)   cardiac output
B)   stroke volume
C)   cardiac cycle
D)   minute cardiac volumeE) All of the above
F) B) and C)

Question 2

When the ventricles relax, blood pressure drops to a minimum value known as the systolic pressure.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following is not a branch of the aorta?

Accepted Answer

A)   Right coronary artery
B)   Pulmonary artery
C)   Brachiocephalic artery
D)   Left subclavian artery
E)   Celiac arteryF) C) and D)
G) B) and E)

Question 4

The blood vessels whose walls are thin enough to allow exchange of gases between the blood and tissue fluid are __________.

Accepted Answer

The answer of The blood vessels whose walls are thin...

Question 5

What is the correct sequence of structures of the cardiac conduction system?

Accepted Answer

A)   AV node, SA node, Purkinje fibers, AV bundle
B)   AV node, AV bundle, Purkinje fibers, SA node
C)   SA node, Purkinje fibers, AV node, AV bundle
D)   SA node, AV node, AV bundle, Purkinje fibers
E)   Purkinje fibers, SA node, AV node, AV bundleF) A) and B)
G) A) and D)

Question 6

Which type of blood vessel serves as a blood reservoir?

Accepted Answer

A)   Arteries
B)   Arterioles
C)   Capillaries
D)   Veins
E)   VenulesF) All of the above
G) A) and B)

Question 7

How do respiratory movements and skeletal muscle contraction affect circulation?

Accepted Answer

A)   They are synergistic because both assist circulation by squeezing and "pumping" venous blood.
B)   They are antagonistic forces because skeletal muscles assist venous blood movement, but respiratory activity inhibits venous movement.
C)   Both synergistically lower blood pressure by enhancing vasodilation, which directly stimulates the cardiac regulatory center.
D)   Both synergistically increase blood pressure by stimulating the sympathetic nervous system to vasodilate arteries.E) None of the above
F) C) and D)

Question 8

What happens to the valves when the ventricular walls relax?

Accepted Answer

A)   Bicuspid valve opens and the tricuspid valve closes.
B)   Tricuspid valve opens and the bicuspid valve closes.
C)   Bicuspid and tricuspid valves close.
D)   Bicuspid and tricuspid valves open.
E)   Aortic and pulmonic valves open.F) A) and B)
G) A) and E)

Question 9

During what phase of the cardiac cycle is blood pressure in the systemic arteries the greatest?

Accepted Answer

A)   During atrial systole
B)   During ventricular systole
C)   During ventricular diastole
D)   During arterial diastole
E)   During atrial diastoleF) C) and D)
G) A) and E)

Question 10

Capillary walls are only one cell layer thick.

Accepted Answer

A) True 
 B)False

Question 11

The outermost membrane that forms a loose-fitting sac around the heart is the __________.

Accepted Answer

A)   fibrous pericardium
B)   epicardium
C)   endocardium
D)   visceral pericardium
E)   myocardiumF) A) and D)
G) B) and D)

Question 12

In normal circulation, blood flow usually follows what pattern of vessels?

Accepted Answer

A)   Artery, arteriole, capillary, venule, vein
B)   Artery, vein, capillary, venule, arteriole
C)   Artery, capillary, vein, arteriole, venule
D)   Vein, venule, capillary, arteriole, artery
E)   Venule, vein, capillary, artery, arterioleF) A) and D)
G) B) and E)

Question 13

Blood that passes into the right ventricle has passed through the __________ valve.

Accepted Answer

A)   mitral
B)   tricuspid
C)   pulmonary
D)   aorticE) None of the above
F) All of the above

Question 14

The density of capillaries within a tissue is proportional to the tissue's __________.

Accepted Answer

A)   thickness
B)   fluid content
C)   type of matrix
D)   rate of metabolism
E)   surface areaF) A) and C)
G) A) and D)

Question 15

Blood from the coronary sinus empties into the right atrium.

Accepted Answer

A) True 
 B)False

Question 16

The oxygen-rich vessels that supply the heart muscle with blood are the cardiac veins.

Accepted Answer

A) True 
 B)False

Question 17

In an ECG pattern, what event is represented by the P wave?

Accepted Answer

A)   Repolarization of the atrial muscle fibers
B)   Repolarization of the ventricular muscle fibers
C)   Depolarization of atrial muscle fibers
D)   Depolarization of ventricular muscle fibersE) All of the above
F) C) and D)

Question 18

What is the function of the pulmonary circuit?

Accepted Answer

A)   Sends oxygen-poor blood to the heart
B)   Brings oxygen-poor blood from the tissues
C)   Sends oxygen-poor blood to the lungs
D)   Brings oxygen-rich blood to the tissuesE) None of the above
F) C) and D)

Question 19

What effect does an excess of calcium have on the heart?

Accepted Answer

A)   No effect
B)   Increases heart action
C)   Decreases heart action
D)   Decreases heart rate but prolongs contractionsE) A) and B)
F) All of the above

Question 20

What valve separates the left atrium from the left ventricle?

Accepted Answer

A)   Mitral valve
B)   Tricuspid valve
C)   Pulmonary valve
D)   Aortic valveE) A) and B)
F) A) and D)

Exam 13: Cardiovascular System

Blood from the coronary sinus empties into the right atrium.

Correct AnswerverifiedShow Answer

What happens to the valves when the ventricular walls relax?

Correct AnswerverifiedShow Answer

What is the function of the pulmonary circuit?

Correct AnswerverifiedShow Answer

The blood vessels whose walls are thin enough to allow exchange of gases between the blood and tissue fluid are __________.

Correct AnswerverifiedShow Answer

Which type of blood vessel serves as a blood reservoir?

Correct AnswerverifiedShow Answer

The volume of blood discharged from the ventricle in a minute is called __________.

Correct AnswerverifiedShow Answer

Which of the following is not a branch of the aorta?

Correct AnswerverifiedShow Answer

The oxygen-rich vessels that supply the heart muscle with blood are the cardiac veins.

Correct AnswerverifiedShow Answer

When the ventricles relax, blood pressure drops to a minimum value known as the systolic pressure.

Correct AnswerverifiedShow Answer

Blood that passes into the right ventricle has passed through the __________ valve.

Correct AnswerverifiedShow Answer

During what phase of the cardiac cycle is blood pressure in the systemic arteries the greatest?

Correct AnswerverifiedShow Answer

The outermost membrane that forms a loose-fitting sac around the heart is the __________.

Correct AnswerverifiedShow Answer

Capillary walls are only one cell layer thick.

Correct AnswerverifiedShow Answer

What is the correct sequence of structures of the cardiac conduction system?

Correct AnswerverifiedShow Answer

What valve separates the left atrium from the left ventricle?

Correct AnswerverifiedShow Answer

In an ECG pattern, what event is represented by the P wave?

Correct AnswerverifiedShow Answer

What effect does an excess of calcium have on the heart?

Correct AnswerverifiedShow Answer

How do respiratory movements and skeletal muscle contraction affect circulation?

Correct AnswerverifiedShow Answer

The density of capillaries within a tissue is proportional to the tissue's __________.

Correct AnswerverifiedShow Answer

In normal circulation, blood flow usually follows what pattern of vessels?

Correct AnswerverifiedShow Answer

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