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6. Are there 3 functions are there of the respiratory system?
7. Internal respiration occurs in the lungs
8. 98.5 % of oxygen is carried in the plasma in the blood
9. The hilum is the entry point of the blood vessels into the lungs
10. Total lung capacity is 4000mls
11. Does the pulmonary arteries carry oxygenated blood away from the heart?
12. A decrease in pH causes more oxygen to be released from haemoglobin
13. If a person is breathing they have 100% ventilation
14. Tidal volume (amount of air which passes in and out of the lungs on quiet breathing) is 500mls
15. Air is warmed or cooled to body temperature, moistened and filtered by the nose and nasal cavity
16. Morphine and barbituates can increase respiratory rate
17. Cheyne-stokes breathing is characterised as alternating periods of aponea and deep rapid breathing.
18. The pnemotaxic area steps in to stop inspiration an brings on expiration
19. The left lung has 3 lobes
20. Stridor sounds like a bubbling sound