Respiratory System
Across
- 2. The shared area of respiratory and digestive system.
- 5. The heart does this to help maintain concentration differences at the alveoli.
- 9. These muscles are found in between the ribs.
- 11. The 2 large airways branching from the trachea.
- 12. The walls of the alveoli must be this for gas exchange to occur.
- 15. (5, 6) Warms, filters and moistens the air you breathe.
- 16. (9, 8) These carry deoxygenated blood from heart to lungs.
- 18. The flap of cartilage tissue covering trachea when swallowing.
- 19. The diaphragm does this when we inspire.
Down
- 1. (6, 9) Gasses are exchanged in the respiratory system using this process.
- 3. (4, 2, 3) Air will always move this way due to pressure.
- 4. Cells do this and it causes carbon dioxide levels in the blood to increase.
- 6. Made of bone for the protection of the lungs.
- 7. Pressure in the lungs _____________ when we inhale.
- 8. (7, 5) The lubricant, holds lungs to pleural membranes and in turn the ribs.
- 10. This gradient is the cause of gas exchange in the respiratory system.
- 13. These are the site of gas exchange in the lungs.
- 14. Breathing out is also called this.
- 17. The respiratory surface must be this for gases to dissolve.