Respiratory System

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