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1. Alveoli become enlarged and damaged with reduced surface area in heavy smokers. The condition is called
A. Emphysema
B. Bronchitis
C. Silicosis
D. Asthma
2. Increased asthmatic attacks in certain seasons are related to
A. Inhalation of seasonal pollen
B. Hot and humid environment
C. Low temperature
D. Eating fruits preserved in containers
3. The respiratory centre of the brain is sensitive to
A. More O2 concentration in blood
B. More CO2 concentration in blood
C. Accumulation of blood in the brain
D. All of the above
4. Emphysema is a
A. Pulmonary disease
B. Cardiovascular disease
C. Neural disease
D. Renal disease
5. The pneumotaxic centre is present in
A. Medulla
B. Cerebrum
C. Cerebellum
D. Pons varolii
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