Across
- 2. which direction does the diaphragm moves while exhaling .
- 4. blood contains red pigment called
- 6. system The system that help our body to breathe and release energy from the food .
- 8. muscles The muscles between the ribs .
- 9. pair of spongy organs .
Down
- 1. fuel that is used in our daily activities .
- 3. volume the amount you breathe in and out in one normal breath .
- 5. which direction does the diaphragm moves while inhaling .
- 7. which is the most common passage for food and air .
- 9. air travels through the