Respiratory
Across
- 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
Down
- 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