Unit Test Answers

22 verified answers
1
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What is a key feature of circulation?

A
nutrition transport
B
creation of carbon dioxide
C
transportation of alveoli
D
elimination of oxygen
2
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What are the similarities between cardiovascular and respiratory systems?

A
Both systems need a healthy oxygen supply to sustain human life.
B
Both systems use high amounts of carbon dioxide in the blood stream.
C
Both systems use circulation as the primary source of transporting bloodthroughout the body.
4

What are three types of blood vessels?

A
veins
B
arteries
C
bronchioles
D
capillaries
9

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10

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12

Which is responsible for transporting oxygen-rich blood from the lungs to the left atrium of the heart?

A
pulmonary veins
B
inferior vena cava
C
superior vena cava
D
pulmonary arteries
19

What is the function of the respiratory system?

A
elimination of wastes
B
transport of blood
C
nutritional support
D
transfer of gases
20

Which describes the most direct function of the nostrils?

A
allows air to enter lungs
B
guides air to the larynx
C
permits food to reach the pharynx
D
permits air to enter the body
27

Where does gas exchange occur?

A
left ventricle
B
left atrium
C
trachea
D
lungs
28

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29

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