Across
- 3. connects nasal cavity to larynx
- 5. windpipe
- 7. Dry air consists of 78.08% __________
- 8. air sacs
- 10. air comes in and out
Down
- 1. skeletal muscle that sits between the ribs
- 2. the air that enters the lungs
- 4. muscles between the ribs
- 6. when breathing in, the diaphragm and intercostal muscles __________
- 9. Two identical organ found in the chest