Respiratory System
Across
- 5. What could be threatened if we didn't breathe out carbon dioxide?
- 7. What would cells do if oxygen level got too low?
- 8. and Chest Cavity Where is the respiratory system located?
- 9. Breathing this in gives cells energy to power life-sustaining reactions
Down
- 1. These are tiny air sacs in the lungs where gas exchange occurs
- 2. System Inhaling oxygen and exhaling carbon dioxide is the main function of this system
- 3. and Respiratory What two components is the respiratory system divided into?
- 4. These are tiny blood vessels
- 6. What is another name for voice box?
- 7. What is another name for throat?