RESPIRATORY SYSTEM WORKSHEET
Across
3. This organ is responsible for gas exchange.
5. A.K.A "Windpipe"
6. Your "Voice Box"
7. Hair like structures.
8. The "windpipe" branches first into these.
10. This gas is breathed out.
13. This gas makes up 21% of the air
Down
1. The act of moving air out of the body
2. Thin sacs at the end of the "branches".
4. Smaller "Branches" in the "upsidedown tree".
9. Along with the rib muscles, this muscle lets you breath
11. The act of bringing air into the body.
12. Prevents food from entering the lungs.
RESPIRATORY SYSTEM WORKSHEET