Q.1.
When you breathe, your lungs take in ___ and remove ___.
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Q.2.
The two main branches from the trachea (one to each lung)
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Q.3.
The air sacs that are covered with capillaries that separate gases we need from gases we don't need.
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Q.4.
What is the function of the bronchi (bronchial tubes)?
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Q.5.
What is the main function of the respiratory system?
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Q.6.
Within the lungs, the exchange of oxygen and carbon dioxide occurs between the ___ and the capillaries.
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Q.7.
A disorder of the lungs called ____ causes the bronchi to become restricted (get smaller) so air can't get to the lungs.
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Q.8.
Name the organ labeled #8
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Q.9.
What is tube that is also known as your wind pipe?
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Q.10.
Name the structure labeled #6
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Q.11.
What does the cilia do in the respiratory syestem ?
Q.12.
What does the Larynx hold ?
Q.13.
What are the most five important organs part of the respiratory system? 
Q.14.
How is carbon dioxide released from the body? 
Q.15.
What is an other word for windpipe?
Q.16.
What is the name of the muscle below the lungs that helps with breathing?
Q.17.
The beginning of the respiratory system that warms and moistens the air.
Q.18.
spasm of the diaphragm
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Q.19.
Given the following structures:larynxnasal cavitypharynxtracheaWhich of the following is the correct order that air would flow during inhalation. 
Q.20.
What is the small flap of tissue called that covers the air-only passage when we swallow?
Q.21.
Emphysema
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Q.22.
Inflammation of the voice box
Q.23.
How much of the air we breath in is Oxygen? 
Q.24.
Cellular respiration needs two reactants. They are....