The Respiratory System
Across
- 1. 2 narrower tubes that the trachea branches into
- 4. air passes from the pharynx into a triangle-shaped area called the voice box or
- 6. a tube that is held open by C-shaped rings of cartilage
- 8. a flap of tissue at the lower end of the pharynx
- 10. from Latin alveus means "cavity"
- 11. main organs of the respiratory system
Down
- 2. a series of chemical reactions that transform the energy in food molecules to usuable energy
- 3. the movement of air into and out of the lungs
- 5. where air is warmed and moistened
- 7. lines the nose and most other airways in the respiratory system
- 9. a tubelike passageway at the top of the throat that recieves air, food, and liquids from the mouth or nose