Respiratory Puzzle

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Across
  1. 1. series of slender curved bones articulated in pairs to the spine, protecting the thoracic cavity
  2. 4. transports air to and from lungs
  3. 5. common passageway for air, food and liquid
  4. 6. air sacs of gas exchange
  5. 8. Membrane cover the lungs and line the chest cavity
  6. 10. which an organism absorbs from the environment gases necessary for its cellular metabolism
  7. 13. Cavity flitters, warms and moistens air
  8. 14. branching airways
  9. 16. passage for food and air
Down
  1. 2. Muscle moves ribs during respiration
  2. 3. respiration the chemical reaction in which organic molecules are degraded to make ATP molecules
  3. 7. maintains an open airway, routed food and air appropriately
  4. 9. skeletal muscle of respiration
  5. 11. covers larynx during swallowing
  6. 12. transport air to alveoli for gas exchange
  7. 15. passage for airway