Respiratory system and blood

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Across
  1. 2. It surrounds Alveoli to transport gases.
  2. 5. system Your body couldn't breathe without this system.
  3. 7. The liquid part of the blood.
  4. 8. dioxide When you breathe in air, you bring oxygen into your lungs and blow out:
  5. 10. The name of tiny air sacs in your lungs.
  6. 11. White blood cells help us to fight against them.
  7. 13. Clotting blood from bleeding.
  8. 14. The chemicals that kill Pathogens were produced by white blood cells.
Down
  1. 1. Respiratory system is made up of the trachea, the lungs and the:
  2. 3. It is not good for your lungs.
  3. 4. Other name of trachea
  4. 6. Taking in of air
  5. 9. Red pigment contains in red blood cells.
  6. 12. A condition due to the loss of air sacs within the lungs.