Across
- 5. Site of respiration in lungs where gas exchange occurs
- 7. Called windpipe; main passageway of air into lungs
- 8. The process in which air moves in and out of the lungs is known as breathing.
- 9. The openings in the nose that allow entry and exit of air.
- 10. Sponge like organs that are the main organs of the respiratory system
Down
- 1. Muscle nesting in the lungs that contract and expand when breathing.
- 2. The only part of the respiratory system that is externally visible
- 3. these are the two large lightweight organs of the respiratory system
- 4. Protects lungs from impact
- 6. Contains vocal cords responsible for voice production