Across
- 2. as you inhale, this flattens to give your lungs room to inflate:
- 3. hairs that keep mucus and dirt out of the lungs
- 4. it is made up of the trachea, lungs, and the_________
- 8. tiny air sacs in the lungs
- 9. the trachea is also known as the __________
- 10. you breathe in oxygen and breathe out________
Down
- 1. ________ harms the lungs.
- 5. when you inhale your lungs _______, when you exhale they deflate
- 6. also known as the voice box
- 7. your body can't breathe without this system