Across
- 2. inhalation is an ____ process
- 4. air enters,filtered,warmed, and moistened
- 5. regulates entry of air, movable flap
- 6. organ of the gas exchange
- 8. inhalation is the intake of
Down
- 1. sheet of muscle that forms border between chest cavity and the abdomen
- 3. the primary function of the respiratory system is to _____
- 7. inhalation takes oxygen to the