Respiratory System

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Across
  1. 2. breathing, includes inspiration and expiration
  2. 5. respiration that exchanges gases between the blood and the tissues
  3. 7. the process by which gas exchange takes place
  4. 9. used in insects to transport gases to the cells
  5. 12. contains the vocal cords and is covered by the epiglottis
  6. 14. the air pockets of the lung
  7. 16. the exchange that takes place when water and blood flow in opposite directions to maximize oxygen extraction
  8. 17. vascularized areas of the body that aid in respiration in water
Down
  1. 1. this carries four oxygen molecules at a time and requires iron
  2. 3. how most carbon dioxide is transported in the blood
  3. 4. contain anterior and poster air sacs for one way ventilation
  4. 6. these had to evolve in terrestrial vertebrates
  5. 8. in this process, the pressure in the thoracic cavity is decreased and the lung volume increases
  6. 10. respiration that exchanges gasses between the environment and the lungs
  7. 11. a disorder that occurs as a result of mucus build-up in the lungs
  8. 13. in this process, the pressure in the thoracic cavity increases and the lung volume decreases
  9. 15. carries air to the lungs and is held open by cartilage rings