Across
- 2. Air sacs found in lungs where gas exchange occurs
- 4. Structures that prevent trachea from collapsing
- 6. Process by which gases are exchanged in the lungs
- 7. You can find one of these in each lung
- 8. Flap that covers the wind pipe during swallowing
Down
- 1. Cells that secrete mucus in the ciliated epithelium
- 3. Hair like projections found on epithelial cells which filter air and waft mucus to the back of the throat
- 5. There are many of these tubes in the lungs
- 9. The scientific name for the wind pipe