Across
- 4. The movement of air or dissolved gases into and out of the lungs
- 6. To move air into and out of the lungs
- 8. a serious illness in which one or both lungs become red and swollen and filled with liquid
- 9. to send air out of your lungs
- 10. a sticky, wet liquid produced by glands
Down
- 1. needed to keep most living things alive
- 2. two organs in the chest used to breathe
- 3. the muscle that helps move air in and out of the lungs
- 5. The windpipe
- 7. to breathe air, smoke, or gas into your lungs