Across
- 4. has glands that secrete mucus to trap dust; warms and moistens air entering the lungs
- 5. curved, muscular structure below the lungs used in inhalation & exhalation
- 6. the voice box
- 9. ____ muscles found between the ribs; they help to move the ribs; there are 2 types (internal and external)
- 10. passageway to the lungs; has c-shaped rings of cartilage, and cilia
Down
- 1. these help to waft mucus to the pharynx
- 2. branching network of tubes leading to the alveoli
- 3. passageway of air and of food
- 7. site of gaseous exchange with the blood
- 8. branches that lead from trachea to left and right lungs; contains cartilage and cilia