Respiratory system

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Across
  1. 3. Pair of organs responsible for breathing
  2. 4. Smaller air passages branching from the bronchi.
  3. 7. Movement of air into and out of the lungs.
  4. 11. Shared passageway for air and food behind the nose and mouth
  5. 13. To push air out of the lungs.
  6. 14. passage Airway inside the nose that warms and filters air.
  7. 16. Tiny blood vessel where gases move between air and blood.
Down
  1. 1. Two large tubes that branch off the trachea into the lungs.
  2. 2. dioxide Waste gas released from the body during exhalation.
  3. 5. Voice box that sits above the trachea.
  4. 6. To draw air into the lungs.
  5. 8. Gas the body needs to produce energy.
  6. 9. Windpipe that carries air from the larynx to the bronchi
  7. 10. Flap of tissue that closes over the trachea when swallowing.
  8. 12. Tiny air sacs where oxygen enters the blood.
  9. 15. Passage through which air travels to the lungs
  10. 17. Process of exchanging oxygen and carbon dioxide in the body.