Respiratory System

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Across
  1. 1. Flap of cartilage that covers the trachea during swallowing
  2. 4. Normal breathing
  3. 7. Smallest branches of the bronchi that lead to alveolar sacs
  4. 10. Inflammation of the pharynx
  5. 13. Main air passageways of the lungs
  6. 15. condition of deficient oxygen
  7. 16. Commonly known as the voice box
Down
  1. 2. Formed by stacked, C-shaped pieces of cartilage that are connected by dense connective tissue
  2. 3. A slippery substance secreted by alveolar cells that prevents the lungs from collapsing
  3. 5. Commonly known as the throat
  4. 6. Inflammation of the sinus cavities
  5. 8. Inflammation of the nasal mucosa
  6. 9. Inflammation of the larynx
  7. 10. Pertaining to the lungs
  8. 11. Small, grapelike sacs where gas exchange occurs
  9. 12. Absence of breathing
  10. 14. Commonly known as a "runny nose"
  11. 16. Major organs of the respiratory system