Across
- 3. organ of voice
- 4. primary respiratory organ
- 8. pumps the lungs
- 9. air sac for gas exchange
- 11. network of smaller branches into lung tissue
- 12. cavity purifies the air
- 13. breathing in
Down
- 1. organ between abdomen and neck
- 2. branches at the end of trachea
- 5. restricts food from airway
- 6. windpipe
- 7. way for air to enter the body
- 10. breathing out