The Respiratory System Answers
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Which is the structure labeled B?
A
nasal cavityB
pharynxC
larynxD
trachea2
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Air moves through the respiratory system in a continuous cycle. Which of the following correctly describes the movement of air through the parts of the respiratory system?
A
nose, trachea, bronchioles, alveoli, cellsB
nose, pharynx, alveoli, bronchioles, capillariesC
trachea, bronchi, pharynx, capillaries, cellsD
trachea, bronchioles, bronchi, alveoli, pharynx3
What is the function of the part that is labeled A?
A
moistens and filters incoming airB
prevents food and liquid from enteringC
vibrates and produces soundD
exchanges oxygen and carbon dioxide4
Which occurs as part of gas exchange?
A
oxygen is exhaledB
carbon dioxide is inhaledC
carbon dioxide diffuses from the trachea to blood in capillariesD
oxygen diffuses from alveolar sacs to blood in capillaries5
Which of the following occurs in the upper respiratory system?
A
air enters the alveoliB
air enters the bloodstreamC
air is filtered and moistenedD
air is delivered to muscles6
Which activity is affected by the paralysis, or inability to function, of the vocal cords?
A
inhaling air to breatheB
producing sounds to talkC
exchanging gas at capillariesD
moistening incoming air7
Which part of the respiratory system is correctly paired with its function?
A
Alveoli contract and relax to fill and empty the lungs.B
The voice box warms incoming air that enters the throat.C
Goblet cells produce white blood cells to destroy pathogens.D
The epiglottis prevents food from entering the larynx.8
Which structure has functions in both the respiratory system and the digestive system?
A
esophagusB
larynxC
pharynxD
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