Download The Respiratory System Questions

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The Respiratory System
By Brandi Waters
Breathe in. Breathe out. Breathe in. Breathe out. Did you know that you
take about twenty thousand breaths a day? That is your respiratory system hard
at work. The respiratory system is made up of the nose, throat, voice box,
windpipe, and lungs. Many other parts and muscles help to support it. Its main
job is breathing, but the respiratory system also gives you the ability to speak.
Every time you take a breath, you are bringing oxygen from the air into your
body. Every cell in your body needs oxygen to live. When you take a breath, air
goes into your nose, down your throat, past your voice box, through your
windpipe, and into your lungs. The air that we breathe is often filled with many
things. Dust, pollen, dirt, and many other things can be floating in the air. Cilia,
tiny hairs in the nose and other parts of the respiratory system, help to clean the
air that you breathe before it reaches your lungs. The cilia keep debris out of the
lungs by pushing it in another direction. Some are pushed up into the throat or
nose where they can be blown out with a cough or a sneeze. Others are pushed
into the digestive system. Clean air fills the lungs. The blood in the lungs
exchanges oxygen for the carbon dioxide that it is carrying. The lungs are now
filled with carbon dioxide. You breathe out to get rid of this waste.
The air going out of your lungs may be waste, but your body doesn't let it go to waste. You can use the air that
you exhale to make the vocal cords in your voice box vibrate. Why would you want to do that? That is how you
speak, hum, and sing!
The Respiratory System
Questions
1. Which of the following is NOT a part of the respiratory system?
A. lungs
B. tongue
C. windpipe
D. nose
2. ______ help to remove pollen, dirt, dust, and other things from the air that you breathe.
A. cilia
B. debris
C. vibrations
D. all of the above
3. In the lungs, blood exchanges ______ for oxygen.
A. carbon monoxide
B. carbon dioxide
C. carbon tetrafluoride
D. carbon
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4. What are cilia?
5. The air that you ______ can be used to speak.
Explain how dust and dirt in the air that you breathe are removed from your body.
Define the word debris, as it was used in the paragraphs above.