Respiratory System

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Across
  1. 2. a hollow tube strengthened and kept open by rings of cartilage
  2. 5. these branch many times
  3. 8. process by which the body takes in oxygen and remove carbon dioxide
  4. 10. when you inspire this gas is consumed
  5. 12. the diaphragm relaxes and moves upwards by breathing out
  6. 15. also known as the throat
  7. 16. contracts and relaxes
Down
  1. 1. when you expire this gas is exerted
  2. 3. extremely thin walls
  3. 4. the diaphragm contracts and flattens by breathing in
  4. 6. bag like organs
  5. 7. also known as the chest cavity
  6. 9. warmed, moistened and filtered of any foreign material
  7. 11. deliver air to the lungs
  8. 13. remove dirt, irritants and mucus through steady, rhythmic movements
  9. 14. also known as the voice box