The Respiratory System crossword puzzle

12345678910111213
Across
  1. 2. when we breathe in air
  2. 5. what is another name for Pharynx
  3. 6. what is the name of tubes that are
  4. 9. to your lungs
  5. 11. out
  6. 13. What is another name for the trachea
Down
  1. 1. what is the most important organ in the respiratory
  2. 3. another name for the voice box
  3. 4. what is the name of the gas that we
  4. 5. Passage connecting your throat and lungs
  5. 7. we use this to breathe in air
  6. 8. when we breathe out air
  7. 10. how many lungs do you have
  8. 12. what is the color of the lungs