Across
- 2. The upper part of the trachea
- 3. also called “the windpipe”
- 6. Flap that prevents food from entering trachea.
- 7. curved bones that protect the heart and lungs
- 9. the tiny air sacs of the lungs
Down
- 1. a muscle separating the thorax from the abdomen
- 4. condition that causes difficulty breathing
- 5. air passages that lead from the trachea to lungs
- 6. connects the throat to the stomach
- 8. lung inflammation caused by infection