Respiratory System
Across
- 3. The windpipe that is lined with mucus and cilia to trap particles
- 7. Tubes that carry air closer to the site of external respiration
- 9. The voice box that contains the vocal cords
- 10. A tiny air sacs through which gas exchange take place
Down
- 1. Right and left airway passages closest to the trachea
- 2. The gas that is exhaled out of the lungs.
- 4. A single breath inhaled and exhaled.
- 5. A tiny blood vessel through which gas exchange takes place.
- 6. done shaped muscle that causes the chest cavity to expand and contract
- 8. Gas used by the body to metabolize food for energy.