Respiratory System - "Breathing"

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Across
  1. 6. differences in air ______, determine the direction in which air moves
  2. 7. found on epithelial cells in your airways that function to sweep mucus and dust out of the airways
  3. 8. process in which air is forced into the lungs
  4. 9. while breathing out, ribcage moves inward & _____
  5. 10. (plural) site of gaseous exchange
  6. 12. two of these branch from the "windpipe" into each of your lungs (plural term)
  7. 13. (singular) site of gaseous exchange
  8. 15. the contraction and relaxation of this set of muscles brings about the movement of the ribcage
  9. 16. another term to describe "breathing"
Down
  1. 1. type of cell that produces mucus
  2. 2. process in which air is forced out of the lungs
  3. 3. vocal cords are found here
  4. 4. also known as "windpipe"
  5. 5. while breathing in, ribcage moves upward & _____
  6. 6. back of the throat region where both air and swallowed food may pass across
  7. 9. flatten sheet of muscle; it contracts when you breathe in & relaxes when you breathe out
  8. 11. also known as the chest cavity
  9. 14. volume of this organ changes during "breathing"