The Respiratory System
Across
- 4. :where the lungs and the blood exchange oxygen and carbon dioxide
- 5. : Protects your lungs and other organs
- 7. : where the air that comes from our mouth or nose, reaches your lungs
- 9. :conducts air into the lungs
- 10. a part of your face used for breathing
- 11. : Something we breathe in and need to survive
- 12. Something that moves when you inhale and exhale
Down
- 1. : Carries blood away from the heart
- 2. : The organ that helps us breathe
- 3. : is the movement of molecules from a region of higher concentration to a region of lower concentration
- 6. Another name for it is a windpipe
- 8. dioxide : The air we exhale