Respiratory System Crossword Puzzle
Across
- 1. Gelatinous, slippery fluid that traps dust and other particles entering the respiratory system.
- 4. Primary function of the respiratory system (2 words).
- 7. Process of gas exchange in the body.
- 8. Tubes from the trachea to the lungs.
- 9. The left lung is smaller than the right lung to make room for this organ.
Down
- 1. Secondary external opening that brings air into the respiratory tract.
- 2. The bronchi are part of this respiratory system.
- 3. Exhalation occurs when the air pressure in the lungs is __________ than outside the body.
- 5. Prevents food from entering the airway.
- 6. The diaphragm separates the thorax (chest) from this region in the body.