A-LevelBiologyGas exchange9700/12 · Feb/Mar 2018 · Q341 Mark
Chronic obstructive pulmonary disease (COPD) includes bronchitis and emphysema. Which symptom is specific to emphysema?
Aexcess mucus secretion by the goblet cells
Binflammation of the bronchial epithelium
Closs of elasticity of the alveolar walls
Dthickening of the smooth muscle of the bronchi
✓ Correct answer
C: loss of elasticity of the alveolar walls
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