Find out the incorrect statement:
Correct answer: D. Exhaled air is comparatively drier than inhaled air
- A. Inspired air contains more O2 than exhaled air:
- B. Expired air has 100 times greater CO2 as inspired air
- C. Amount of N2 is equal in both inhaled and exhaled air
- D. Exhaled air is comparatively drier than inhaled air
Explanation
Exhaled air has saturated water contents as compared to inhaled air which has variable water contents.
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About Respiration
The human respiratory system includes the air passages, lungs, alveoli and breathing muscles, while gaseous exchange explains how oxygen enters blood and carbon dioxide leaves it by diffusion. The effects of smoking include damage to cilia and alveoli, reduced gas exchange, chronic bronchitis, emphysema and increased risk of lung cancer.
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