Respiratory System and Air Quality

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Across
  1. 2. expelled during exhalation. (two words) Carbon Dioxide
  2. 4. of lungs after excessive smoking. Black
  3. 6. of World Health Organization. WHO
  4. 9. side of the lung with three lobes. Right lung : (_) lung
  5. 10. condition that refers to shortness of breath. Hypoxia
  6. 11. it causes shortness of breath. Oxygen
  7. 15. hairs in the nasal cavity that filter particles in the air. Cilia
Down
  1. 1. of the respiratory system. Diaphragm
  2. 3. surrounded by rings of cartilage. Trachea
  3. 5. location of lungs in the chest. (two words) Thoracic Cavity
  4. 7. is addictive but harms your lungs. Smoking
  5. 8. of the body system the bronchi reside in. (two words) Respiratory System
  6. 9. layer of tissue that covers both your lungs. Pleural
  7. 12. that keeps your lungs healthy. Clean air : (_) air
  8. 13. of pollution from transportations like cars. Vehicle pollution : (_) pollution
  9. 14. air sacs in your lungs where oxygen is brought into the blood. Alveoli