The Heart

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Question 1
Free
Multiple Choice

The heart beats approximately ________ times each day.

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A

1,000

B

10,000

C

100,000

D

1,000,000

E

10,000,000

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Question 2
Free
Multiple Choice

The heart pumps approximately ________ liters of blood each day.

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A

8,000

B

15,000

C

20,000

D

50,000

E

100,000

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Question 3
Free
Multiple Choice

The adult heart is roughly the size of

Choose correct answer/s
A

the liver.

B

a man's clenched fist.

C

the gallbladder.

D

the hand of a 10-year-old.

E

the brain.

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Question 4
Free
Multiple Choice

The term used to describe fluid collecting in the pericardial cavity that restricts the movement of the heart is known as

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A

cardiac tamponade.

B

mitral valve prolapse.

C

pleural effusion.

D

cardiomyopathy.

E

pericarditis.

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Question 5
Free
Multiple Choice

The structure that permits blood flow from the right atrium to the left atrium in the fetal circulation is the

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A

foramen ovale.

B

interatrial septum.

C

coronary sinus.

D

fossa ovalis.

E

ligamentum arteriosus.

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Question 6
Multiple Choice

Blood leaves the right ventricle by passing through the

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A
aortic valve.
B
pulmonary valve.
C
mitral valve.
D
tricuspid valve.
E
bicuspid valve.
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Question 7
Multiple Choice

The atrioventricular valves permit blood flow

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A
in one direction only.
B
in both directions.
C
in many directions.
D
in opposite directions on the right and left.
E
from a ventricle to an atrium.
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Question 8
Multiple Choice

Blood returning to the heart from the systemic circuit first enters the

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A
right atrium.
B
right ventricle.
C
left atrium.
D
left ventricle.
E
conus arteriosus.
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Question 9
Multiple Choice

Blood returning to the heart from the pulmonary circuit first enters the

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A
right atrium.
B
right ventricle.
C
left atrium.
D
left ventricle.
E
conus arteriosus.
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Question 10
Multiple Choice

The earlike extension of the atrium is the

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A
ventricle.
B
coronary sinus.
C
coronary sulcus.
D
auricle.
E
interatrial septum.
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Question 11
Multiple Choice

The coronary sulcus is a groove that

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A
marks the border between the atria and ventricles.
B
marks the boundary line between the right and left ventricles.
C
marks the boundary line between the right and left atria.
D
separates the atrioventricular valves from the atria.
E
separates the coronary arteries from the coronary veins.
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Question 12
Multiple Choice

In the middle of the thoracic cavity is a region occupied by the heart, great vessels, thymus, esophagus, and trachea called the

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A
pleural space.
B
pericardial space.
C
mediastinum.
D
cardiac notch.
E
ventral cavity.
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Question 13
Multiple Choice

The cusps (leaflets) of atrioventricular valves attach directly to

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A
papillary muscles.
B
trabeculae carneae.
C
chordae tendineae.
D
interatrial septa.
E
coronary sulci.
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Question 14
Multiple Choice

Contractions of the papillary muscles

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A
close the atrioventricular valves.
B
close the semilunar valves.
C
eject blood from the ventricles.
D
prevent the atrioventricular valves from reversing into the atria.
E
eject blood from the atria into the ventricles.
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Question 15
Multiple Choice

The visceral pericardium is the same as the

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A
mediastinum.
B
parietal pericardium.
C
epicardium.
D
myocardium.
E
endocardium.
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Question 16
Multiple Choice

Most of the middle layer in the heart wall is composed of

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A
cardiac muscle cells.
B
chondrocytes.
C
epithelial cells.
D
fibrocytes.
E
smooth muscle cells.
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Question 17
Multiple Choice

The right ventricle pumps blood to the

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A
right and left lungs.
B
left ventricle.
C
left atrium.
D
aorta.
E
right atrium.
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Question 18
Multiple Choice

The left ventricle pumps blood to the

Choose correct answer/s
A
lungs.
B
right ventricle.
C
right atrium.
D
aorta.
E
pulmonary circuit.
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Question 19
Multiple Choice

The right atrium receives blood from all of the following structures except the

Choose correct answer/s
A
coronary sinus.
B
superior vena cava.
C
inferior vena cava.
D
systemic circuit.
E
pulmonary veins.
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Question 20
Multiple Choice

When a blood clot forms on a ruptured plaque in a coronary artery, the condition is referred to as a(n)

Choose correct answer/s
A
coronary spasm.
B
myocardial infarction.
C
coronary thrombosis.
D
angina pectoris.
E
pulmonary embolism.
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