Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Which substances are produced during respiration?
a. | water and oxygen | b. | oxygen and red blood cells | c. | carbon dioxide and
water | d. | carbon dioxide and red blood cells |
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2.
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Where in the respiratory system does gas exchange occur?
a. | in the heart | b. | in the alveoli | c. | in the
pharynx | d. | in the trachea |
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3.
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The role of the respiratory system is to bring what substance into the
body?
a. | water | b. | oxygen | c. | carbon
dioxide | d. | red blood cells |
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4.
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During gas exchange, which substance moves from the alveoli into the
blood?
a. | carbon dioxide | b. | oxygen | c. | water | d. | nitrogen |
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5.
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The dome-shaped muscle that plays an important role in breathing is the
a. | diaphragm. | b. | alveolus. | c. | larynx. | d. | bronchus. |
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6.
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What happens to cause air to be exhaled from the lungs?
a. | The rib muscles contract and move outward. | b. | The chest cavity
expands and grows larger. | c. | The diaphragm relaxes and moves
upward. | d. | The lungs contract and then expand. |
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7.
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What is the name of the small flap of tissue that seals off the trachea during
swallowing?
a. | pharynx | b. | larynx | c. | epiglottis | d. | alveoli |
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8.
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Which parts of the respiratory system divide into smaller and smaller tubes in a
pattern that resembles the branches of a tree?
a. | pharynx | b. | trachea | c. | bronchi | d. | epiglottis |
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9.
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Hairlike structures that line the nasal cavities and trachea are called
a. | cilia. | b. | mucus. | c. | bronchi. | d. | capillaries. |
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10.
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Each alveolus is surrounded by a network of
a. | cilia. | b. | veins. | c. | arteries. | d. | capillaries. |
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11.
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What produces a person’s voice?
a. | the lungs | b. | the diaphragm | c. | the vocal
cords | d. | the alveoli |
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12.
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The vocal cords stretch across the opening of the
a. | diaphragm. | b. | larynx. | c. | bronchi. | d. | pharynx. |
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Modified True/False
Indicate
whether the statement is true or false. If false, change the identified word or phrase to make the
statement true.
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13.
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The respiratory system removes oxygen and water from the body.
_________________________
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14.
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Oxygen and carbon dioxide are exchanged in capillaries that surround tiny sacs
called bronchi. _________________________
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15.
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In gas exchange, oxygen passes from the alveoli into the blood.
_________________________
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16.
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When the diaphragm contracts, air pressure in the chest increases.
_________________________
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