The Respiratory System

1234567891011
Across
  1. 2. Inflates and deflates lungs
  2. 4. What we breathe out
  3. 7. Connects bronchus to alveoli
  4. 8. The air exchange pipe to lungs
  5. 10. Where you breathe from
  6. 11. Where blood goes through to get oxygen
Down
  1. 1. High to low concentration in molecules
  2. 3. The organ that takes in air
  3. 5. What we need to breathe in
  4. 6. Air sacs to give oxygen to the blood
  5. 7. Spilts air between the lungs
  6. 9. A cage of bones to protect lungs