Across
- 1. is one of the two primary divisions of the trachea.
- 4. or windpipe is a cartilage-reinforced tube extending from larynx to bronchi.
- 5. connects the mouth and nasal passages with the esophagus.
- 7. is a large air-filled space above and behind the nose.
- 9. are air sacs where gas exchanges in the human body.
- 10. are organs specialized in exchanging gases between the blood and the atmosphere
Down
- 2. provides oxygen to the body’s cells while removing carbon dioxide.
- 3. is a muscle used for inspiration and inhalation.
- 6. is a thin-walled branch.
- 8. air passes over the ___________________ and down the trachea.