Across
- 4. closes over the larynx when we swallow food
- 6. the tracheal ________________ is where the trachea branches into bronchi
- 7. hairlike projections in the nose which filter debris
- 8. where the nose and pharynx intersect
- 9. the muscular membrane that separates the thoracic and abdominal cavity
- 10. air sacs where gas exchange occurs
- 13. in RBC, O2 binds to this
- 14. delivered to the cells from the lungs
- 15. inside the nose, warm and moisten air
- 17. the membrane that covers the thoracic cavity and organs
Down
- 1. nosebleed
- 2. low oxygen in the blood and tissue
- 3. breathing, the intake of fresh air
- 5. small branches of the bronchus
- 7. what the rings are made of in the trachea
- 11. the "voicebox"
- 12. receptors responsible for smell
- 16. the "windpipe"