Across
- 1. The organ that is the reason the left lung only has two lobes (5)
- 3. To cough up (sputum) (11)
- 7. A type of lung cell that line the alveoli
- 9. A protein substance that reduced water-related surface tension in the alveoli (10)
- 10. Number of lobes in the right lung (5)
- 11. The area of the brainstem where the inspiratory (aka respiratory) centre is (7)
- 15. The layer of membrane (pleura) that lies close the lungs (8)
- 19. The gas created in cellular metabolism that we excrete through the lungs (6, 7)
- 22. Coughing up blood (12)
- 23. The layer of membrane (pleura) that lies close to the thoracic wall (8)
- 24. The gas we need to live that comprises about 21% of atmospheric air
- 25. Muscle that help elevate the ribs to increase the intrathoracic volume (11)
- 26. The nerve that supplies the diaphragm (7)
Down
- 2. A tube lined with cartilage that connects the upper and lower airways (7)
- 4. A respiratory centre in the pons that helps regulate respiratory rate (11)
- 5. Protein substance created by Goblet cells (5)
- 6. The name given to mucus mixed with saliva that we cough out (6)
- 8. The nerve that takes signals from the aortic bodies to the brainstem to control breathing rate (5)
- 12. Terminal endings in the lungs that conduct gas exchange (7)
- 13. The sensitive patch of tissue at the bifurcation of the bronchi that when touched stimulates cough (6)
- 14. Patches of tissue in the aorta and carotid arteries that sense the concentration of oxygen, carbon dioxide and hydrogen ions (14)
- 16. The protein in red blood cells that carries oxygen (11)
- 17. Bone above which the apex of the lungs rises (7)
- 18. The concentration -------- is the slope that describes why gas moves from point a to point b (8)
- 20. Low level of oxygen in the blood (7)
- 21. A positive ion (anion)that create an acid environment