Some symptoms of chronic obstructive pulmonary disease (COPD) are listed.
1 bursting of alveoli
2 increase in secretion of mucus
3 loss of elastic fibres
4 narrowing of airways
5 reduction in surface area for gaseous exchange
Which of these are also the symptoms of emphysema?
1 )
1, 2 and 4
1, 3 and 5
3 )
2, 3 and 4
4 )
2, 4 and 5
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