Across
- 2. branch-like structures in the lungs
- 3. small blood vessels
- 5. muscles around the rib cage
- 6. windpipe
- 7. quiet breathing
- 8. small sacs;site of gas exchange
- 12. dome-shaped organ under the rib cage
- 13. where air enters the body
Down
- 1. delivers oxygen throughout the body and sends the carbon dioxide to the lungs
- 4. waste that is exhaled from the body
- 9. pair of organs inside the rib cage that are a part of inhaling and exhaling
- 10. throat
- 11. voice box