Respiratory System Crossword Puzzle

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Across
  1. 4. major respiratory center that controls breathing rhythm
  2. 7. caused by excess chronic hyperventilation
  3. 9. Substance that reduces alveolar surface tension
  4. 10. Law relating pressure and volume of air in the lungs
Down
  1. 1. efect describing hemoglobin unloading more o2 when pH drops
  2. 2. Tissue lining nasal cavity and trachea
  3. 3. Collapsed Lung term
  4. 5. protein that carries moost oxygen in the blood
  5. 6. describes how gasses dissolve in liquids
  6. 8. Tiny air sacs where gas exchange occurs