Across
- 6. the swapping of oxygen and carbon dioxide
- 8. the place of gas exchange in our blood
- 10. the muscle that pumps blood throughout our body
Down
- 1. two air sacs
- 2. a hollow tube that connects your throat to your bronchiole tubes
- 3. the gas that NEEDS to make it to all parts of our body
- 4. it is better to breathe out of here because it cleans the air
- 5. the way that oxygen enters the body
- 7. the way that carbon dioxide exits the body
- 9. small sacs, the place of gas exchange in the lungs