Respiratory System

123456789
Across
  1. 1. person's airways become inflamed
  2. 4. the action of breathing
  3. 5. a colorless, odorless reactive gas
  4. 7. hair-like projections that move microbes
  5. 8. exhalation of breath
  6. 9. the long curved bones
Down
  1. 1. part of the body between the thorax (chest) and pelvis
  2. 2. is a muscular tube connecting the throat (pharynx) with the stomach
  3. 3. the hollow muscular organ forming an air passage to the lungs
  4. 6. are a pair of spongy, air-filled organs