Across
- 3. What waste gas is produced during respiration and must be removed?
- 8. What element is found in the waste gas removed during respiration?
- 9. What are the main respiratory organs in mammals
- 11. What is the process by which organisms exchange oxygen and carbon dioxide with their environment?
- 13. What passive process moves gases from a high to a low concentration?
- 17. What is the name for the surface across which gas exchange occurs?
- 18. What substance in surfactant helps reduce surface tension?
- 20. What type of cellular respiration requires oxygen to produce ATP?
- 21. What system helps maintain concentration gradients by moving air in and out of the lungs?
Down
- 1. What are the tiny air sacs where gas exchange with the blood occurs?
- 2. What is the act of releasing air from the lungs?
- 4. What gas is taken in for aerobic respiration?
- 5. What branching airways connect the trachea to the alveoli?
- 6. What term refers to the different measurements of air capacity in the lungs, like tidal or vital capacity?
- 7. What are the main respiratory organs in mammals
- 10. What general term describes oxygen and carbon dioxide?
- 12. What energy molecule is produced during aerobic respiration?
- 14. What is the act of breathing air into the lungs?
- 15. What verb describes the process of producing ATP with oxygen?
- 16. What fluid transports oxygen and carbon dioxide in the body?
- 19. What is a single cycle of inhaling and exhaling called?
- 22. What sticky substance traps particles in the respiratory tract?