Respiratory

4. ________ ions are generated when carbon dioxide dissolves in water
5. Expiration is _________because it does not require muscle activity
8. The internal surface of _________ are lined by type-I and type-II cells
10. Relaxation of the diaphragm would ________ thoracic pressure
13. Tidal volume and inspiratory reserve volume + expiratory reserve volume + residual volume equals _____lung capacity
15. This substance prevents lung collapse and facilitates inspiration by decreasing surface tension at the alveoli
16. The term used to describe the natural tendency of lung to return to smaller size, thereby facilitating expiration
20. The major driver of respiration is increased partial pressures of ___________in the arterial blood
21. Carbon dioxide is transported in blood as ______ions
22. ___________ cells line the internal surface of blood vessels
24. A restrictive airway disease leads to decreased lung __________
25. This process occurs across respiratory membrane

1. Oxygen binds to haemoglobin ________to allow oxygen uptake at the alveoli but delivery at the tissues
2. The ______________ bronchiole is the first site of gas exchange in the airway tree
3. A normal breath is known as a ______ breath
5. A _____________occurs when intrapleural pressure is compromised
6. This pressure is used to define "concentration" of gas molecules in inspired air/blood
7. A negative pressure in the _________space couples the lung to the chest wall
9. Asthma is a(n) ____________ disease that reduces the rate of gas flow during expiration
11. These fibres help lung to expire
12. Small bronchi are known as _________
14. This structure moves inferiorly to increase chest volume
17. The external intercostal muscles contract to cause _________
18. The _________ muscles are involved in forced expiration
19. This structure fuses to generate a narrow respiratory membrane
23. During inspiration, the pressure in the alveoli is _______than the pressure in the atmosphere