Across
- 5. Blood vessels in the alveoli walls
- 6. Location of opening of food pipe and wind pipe
- 7. Passage connecting your throat and lungs.
- 8. Openings that pull air from outside your body into your respiratory system.
- 11. Tissue flap at the entrance to the trachea that closes when you swallow food
- 12. Tiny air sacs where exchange of gases takes place.
Down
- 1. Tubes at the bottom of your windpipe that connect into each lung.
- 2. Muscle that helps your lungs pull in air and push it out.
- 3. Hollow organ that allows you to talk and make sounds
- 4. Bones that surround and protect your lungs and heart.
- 6. Thin outer membrane of lung
- 9. Two organs that remove oxygen from the air and pass it into your blood.
- 10. Small branches of the bronchial tubes that lead to the alveoli.