Test Review Questions
1. What are the two main functions of your respiratory system?
Respiratory system gets oxygen from environment and removes carbon
dioxide and other wastes from body.
2. What gases are in the air that you breathe? The air you breathe is made up
of a mixture of gases including oxygen, nitrogen, and carbon dioxide.
What gas is necessary in air for you to
breathe? oxygen What gas is important to exhale so
that cells are not damaged or destroyed? carbon dioxide
3. What three body systems are involved in
cellular respiration? The respiratory, circulatory, and digestive systems are
involved in cellular respiration.
4. How are materials from food transported
throughout your body? blood vessels
5. What gas is a waste product of cellular respiration? Carbon dioxide
6. Through which structures does oxygen move into the lungs? Air inhaled
through the nose or mouth enters the throat, passes through the trachea, and
moves into the lungs via the bronchial tubes.
7. Where in the lungs are oxygen and carbon dioxide exchanged? alveoli
8. What muscle stretches across the bottom of the thoracic cavity? diaphragm
9. Which structures in the respiratory system are connected by the trachea?
The trachea connects the larynx and bronchial tubes.
10. Which structure directs air down the trachea? The epiglottis
11. How does the structure of the bronchial tubes allow air to pass into the
lungs? The bronchial tubes branch throughout the lungs into smaller and
smaller tubes called bronchioles.
12. What path does air take as it produces sound? Air from the lungs passes
over the vocal cords. The air travels out over the tongue, and sound waves
leave the mouth.
13. Is it possible to speak if you are holding your breath? No Explain. Air is
necessary for sounds to be produced.
14. What are some activities the respiratory system is involved in? speaking,
singing, sneezing
15. Where are vocal cords located? Larynx, or voice box
16. How do vocal cords produce sound? Air from the lungs moves over the vocal
cords, causing them to vibrate and produce sound.
17. List in order the steps that occur when you exhale. Diaphragm relaxes up to
its original position, pushing lungs upward. At the same time, ribs move
inward, collapsing lungs inward. Air moves out of lungs through bronchial
tubes into trachea, then into throat and out nose or mouth.
18. How is oxygen used by your body’s cells? in the respiratory process, cellular
respiration, to release energy
19. Why do you think a person breathes more quickly when exercising? Energy
is expended when you exercise; rapid breathing brings more oxygen into the
body, which can add more energy.