Across
- 6. completes circular ring of cartilage in the upper airway
- 7. smaller sacs
- 8. passageway for air into the lungs
- 10. Transfer gases such as oxygen and carbon
- 13. Exchange of oxygen and carbon
- 14. when external respiration in occurs
- 15. separation of lungs
- 17. Process of breathing in air
- 18. Leaf like flop of tissue at the bottom of the larynx
Down
- 1. Enters lungs and breaks in two smaller tubes
- 2. Transfers oxygen to lungs to the tissue of the cell
- 3. known as an Adams apple
- 4. what is related to respiration
- 5. hollow spaces in the skull connects with nasal cavity
- 9. Physical act of breathing
- 11. Trachea branches into two tubes
- 12. process of breathing out air
- 16. located behind the nasal cavity