Across
- 2. The muscle of the respiratory system that contracts and relaxes to move air into and out of the lungs.
- 5. The bones that protect the respiratory system.
- 6. The process of inhalation and exhalation.
- 9. Type of blood that has a high carbon dioxide concentration.
- 10. The process that uses glucose and oxygen to produce energy.
Down
- 1. The name of the process which allows gases to move from tissues into capillaries.
- 3. Type of blood that has a high oxygen concentration.
- 4. The organelle in which respiration takes place.
- 7. The tissue in which gas exchange takes place.
- 8. The act of taking air into the lungs.