Respiratory System

2. Both food and air pass through this before reaching their appropriate destinations
4. These air-filled spaces along side the nose help make the skull lighter.
6. Main airway to the lungs
9. lung that has 2 lobes
10. organs are located outside the chest cavity
11. the main respiratory muscle that contracts and relaxes to allow air into the lungs.
13. includes air passages, pulmonary vessels, the lungs, and breathing muscles
15. Essential to human speech

1. branch from the trachea into each lung to supply air into the lung
3. traps dust particles, and tiny hairs called cilia help move them to the nose to be sneezed or blown out.
5. organs are located inside the chest cavity
7. The main organ of this system
8. any of the many tiny air sacs of the lungs which allow for rapid gaseous exchange.
12. any of several thin, scroll-shaped bony elements forming the upper chambers of the nasal cavities.
14. lung that has 3 lobes