Respiratory System

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Across
  1. 4. Nose hairs
  2. 7. Air remaining in the lungs after forceful exhalation
  3. 10. Sudden inspiration due to a spasm of the diaphragm
  4. 12. Anterior nares
  5. 14. Reduces surface tension in the alveoli
  6. 15. Flaplike structure that allows air to enter larynx and prevents food from entering air passages
  7. 16. Measures volume of air moving in and out of lungs
  8. 17. Adam's Apple
  9. 19. Not enough blood becoming oxygenated
  10. 20. Clusters of air sacs at the end of the bronchioles
Down
  1. 1. breathing for a short time
  2. 2. Amount of air that enters the lungs through one cycle
  3. 3. The process of gas exchange between the atmosphere and body cells
  4. 5. Excess CO2 in the blood
  5. 6. Space between the nasal cavity and larynx
  6. 8. Nose bleeding
  7. 9. When the mucus membrane becomes swollen and prevents vocal cords from vibrating freely
  8. 11. Oxygen deficiency
  9. 13. Movement of air into the lungs
  10. 18. windpipe