Across
- 3. The air sacs at the end of the bronchioles where gas exchange takes place.
- 6. The two major air passageways leading from the trachea to the lungs.
- 8. Also called the throat; the passage that leads from the oral and nasal cavity to the larynx
- 9. Muscle that pushes and pulls against the lungs.
- 10. The respiratory system begins in the _____ cavity
- 13. The action of breathing.
- 14. This gas is expelled out of the lungs during respiration.
Down
- 1. A flap of cartilage attached to the larynx that closes when food passes by.
- 2. This gas is taken in during respiration.
- 4. A hollow tube that connects the larynx to the right and left bronchus.
- 5. The smallest air passageways coming off the bronchi.
- 7. Air is taken in through the mouth in the oral ______.
- 11. Hollow muscular organ which holds the vocal cords and produces sound.
- 12. Carries out the exchange of gases while we breathe.