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