Answers2026-2027 EDGE Human Anatomy and Physiology BThe Cardiovascular System

The Cardiovascular System Answers

20 verified answers
1
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What is the difference between an artery and a vein?

A
Arteries carry blood away from the heart; veins carry blood to the heart.
B
Arteries carry blood to the heart; veins carry blood away from the heart.
C
Arteries carry blood to the lungs; veins carry blood to the rest of the body.
D
Arteries carry blood to the heart’s chambers; veins carry blood to the lungs.
2
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Which artery carries oxygen-poor blood?

A
pulmonary artery
B
carotid artery
C
coronary artery
D
superior artery
5

What are the two upper chambers of the heart called?

A
left atrium
B
right ventricle
C
right atrium
D
left aorta
E
left ventricle
F
right aorta
6

What are the two lower chambers of the heart called?

A
left atrium
B
right ventricle
C
right atrium
D
left aorta
E
left ventricle
F
right aorta
9

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13

What is the proper name for the electrical system in the heart?

A
vascular electric system
B
heart pump circuit
C
conduction system
D
conductor system
14

Which are electrical “nodes” of the heart? Check all that apply.

A
sinoatrial node
B
aortic node
C
lymph node
D
heart node
E
atrioventricular node
17

What is the bundle of His?

A
a collection of heart muscle components that specialize in preventing the backward flow of blood
B
a collection of valves used for electrical conduction that allow the blood vessels to contract
C
a collection of heart muscle components specializing in electrical conduction that allow the ventricles to contract
D
a collection of chambers specialized for electrical conduction that allow the ventricles to expand
18

What are Purkinje fibers?

A
special valves that relay electrical impulses to the ventricles, which cause contraction
B
special fibers that relay electrical impulses to the atriums, which cause emptying
C
special valves that relay blood to the ventricles, which cause contraction
D
special fibers that relay electrical impulses to the ventricles, which cause contraction
21

Which of the following are classified as blood vessels? Check all that apply.

A
ventricles
B
arteries
C
capillaries
D
lymph nodes
E
veins
22

In the systemic circulation, what kind of blood vessel carries blood from the body back to heart?

A
arteries
B
valves
C
veins
D
arterioles
23

What is the process called when the body forms new blood vessels?

A
angiogenesis
B
systemic circulation
C
Purkinje fibers
D
pulmonary circulation
26

How many cardiac layers are in the human heart?

A
one
B
two
C
three
D
four
27

What is the name of the cardiac layer that is the strongest?

A
myocardium
B
aorta
C
epicardium
D
endocardium
30

The primary purpose of heart valves is to

A
prevent blood from flowing backward.
B
pump blood backward.
C
exchange carbon dioxide for oxygen.
D
protect the heart from trauma.
31

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