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ANSWER
KEY
Respiratory
System
Web
Scavenger
Hunt­
2
WOW
Cards
Directions:
Go
to
Mr.
G’s
Health
Page.
Click
on
Kids
Health
–
How
the
Lungs
Work.
Watch
the
video
and
read
the
article.
Answer
the
questions
below.
Turn
this
into
the
Science
Bin
when
you
have
finished.
1. Your body couldn’t breathe without this system. What is it?
The Respiratory System
2. The respiratory system is made up of the trachea, lungs, and the
diaphragm
3. When you breathe in air, you take oxygen into your lungs and
blow out carbon dioxide.
4. When you inhale, your lungs (inflate, turn purple, deflate.)
5. What is the name of the tiny air sacs in your lungs?_ alveoli
6. The trachea is also called the windpipe
7. The tiny hairs on your lungs that keep mucus and dirt out of
your lungs are called cilia
8. The voicebox is also known as the larynx
9. As you breathe, this muscle contracts and flattens to give your
lungs room to fill up with air diaphragm
10. Which lung is smaller, left or right? Left (This extra space on
the left leaves room for your heart.)
11. alveoli allow oxygen from the air to pass into your blood.
12. The oxygen then enters the blood in capillaries, hitching a ride
on red blood cells and traveling through layers of blood vessels to the
heart.
13. The heart then sends the oxygenated (filled with oxygen) blood
out to all the cells in the body.
14. When it's time to exhale (breathe out), everything happens
reverse
15. By now your cells have used the oxygen they need, and your blood is carrying carbon dioxide and other wastes. 16. Keeping your lungs looking and feeling healthy is a smart idea,
and the best way to keep your lungs pink and healthy is not to smoke