RESPIRATORY SYSTEM

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Across
  1. 1. the part of the respiratory tract that includes the lungs
  2. 6. swelling or inflammation of the bronchi
  3. 8. the air passages in the bronchial tree swell and constrict and it can be triggered by an allergic reaction, exercise, intense fear or nervousness
  4. 9. the part of the respiratory tract that includes the throat and nose
  5. 11. millions of tiny air sacks where their main function is to exchange gases with the blood
  6. 12. occurs in the lungs when the cancer cells grow out of control and destroy the air sacs in the lungs
  7. 13. air is carried into the alveoli where air passes through the alveoli into the veins that carry it to the heart
  8. 14. air sacs in the lungs become enlarged and lose their elasticity
Down
  1. 2. carbon dioxide is carried up the airways and out of the body
  2. 3. the main organs of the respiratory system
  3. 4. an infection of the lungs and causes difficulty breathing
  4. 5. a large muscle that separates the chest from the abdomen
  5. 7. system is the group of passages that exchanges gases
  6. 10. tree shaped passages in the lungs