Across
- 3. Are the sites of gas exchange.
- 6. This flap prevents food from going in the larynx.
- 11. Carries air directly into lungs.
- 12. It's the main component of the Respiratory System.
Down
- 1. Nostrils are also known as _____.
- 2. The only external part of the Respiratory system that is showing.
- 4. Also called the voice box .
- 5. Main Muscle used in breathing.
- 7. Also known as the throat.
- 8. Also called the wind pipe.
- 9. Dioxide, Inside the aleovi there are capillaries. where there's exchange of oxygen and ______________.
- 10. This substance in the nose helps trap bacteria.