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Category 4
CHALLENGE
100
This pair of organs is a main part of the respiratory system.
What are the lungs?
100
Cells use this chemical from the air.
What is oxygen?
100
This is another way of saying "breathe out."
What is exhaling?
100
It is best to breathe in through this part of your body.
What is the nose?
100
This organ allows people to breathe on command.
What is the brain?
200
This strong muscle inflates and deflates the lungs.
What is the diaphragm?
200
Cells give out this waste through the lungs.
What is carbon dioxide?
200
This is another way of saying "breathe in."
What is inhaling?
200
When you exercise, you breathe faster and your heart beats faster because it needs more of this chemical.
What is oxygen?
200
When you're relaxed, the diaphragm is this shape.
What is an arch?
300
Rings of cartilage keep this organ open so you can breathe.
What is the windpipe?
300
These help clean dust out of air you breathe in.
What are (nose) hairs?
300
The lungs do this when the diaphragm goes up.
What is deflating? or What is breathing out? or What is exhaling?
300
When the diaphragm flattens out, your lungs do this.
What is inhaling? or What is breathing in? or What is inflating?
300
This lung is bigger than the other. (And tell me why!)
What is the right lung? Because the heart needs space.
400
This part of the body protects the lungs.
What is the rib cage? or What are ribs?
400
You have about 600 million of these organs in your lungs.
What are air sacs? or What are alveoli?
400
Blood that carries oxygen from the lungs go into this organ.
What is the heart?
400
These two adjectives can describe the lungs.
What is thin? or What is soft? or What is red?
400
This organ is between the mouth and the windpipe.
What are the vocal cords?
500
These small tubes connect to your air sacs.
What are bronchioles?
500
This blood vessel carries oxygen from the lungs to the bloodstream.
What are capillaries?
500
These tubes connect the windpipe to the lungs.
What are bronchi?
500
This is another word for "windpipe."
What is trachea?
500
This is another way of saying "breathing too fast."
What is hyperventilating?
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