The Respiratory System

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Across
  1. 2. bunch of tiny air sacs
  2. 5. it covers the larynx
  3. 7. two tubes in trachea
  4. 8. back part of the mouth arch into a tube
  5. 10. main organs of the respiratory system
Down
  1. 1. two openings that leads to nasal cavity
  2. 3. found at the opening of the pharynx
  3. 4. coating that enclosed the lungs
  4. 6. a tube that is located at the bottom of larynx
  5. 9. outer part of respiratory system