Across
- 3. The movement of air into and out of the lungs
- 5. a tube like passageway at the top of the throat to receive air, food and liquids
- 6. microscopic sacs or pouches
Down
- 1. large muscle below the lungs
- 2. main organs of the respiratory system
- 3. two narrow tubes the the trachea branches to
- 4. a tube that's held open by a C-shaped rings of the cartilage
- 7. a triangle-shaped area called the voice box