Across
- 4. Roof of the mouth
- 7. The act of taking air into the lungs
- 9. This is where gas exchange occurs: grapelike clusters
- 10. The lung is surrounded by this thin, double walled membrane
- 14. The heart and lungs are collectively referred to as this
- 15. Throat
- 16. The process of continuously moving air in and out of the lungs
Down
- 1. Lack of oxygen: causes shortness of breath
- 2. The trachea divides into these which lead to the right and left lung
- 3. These ducts drain into the nose
- 5. The largest organ in the thoracic cavity that does the work of breathing
- 6. Windpipe
- 8. We breathe through these openings in our nose
- 11. The act of moving air out of the lungs
- 12. Voice box
- 13. Clusters of lymphatic tissue that are a first line of defense against infection