| A | B |
|---|
| Affects smaller airways | asthma and bronchitis |
| Affects work of breathing | asthma, bronchitis and emphysema |
| Chronic thickening of the bronchial walls | bronchitis |
| Destruction of alveolar walls | emphysema |
| Decreased surface airway of alveoli | emphysema |
| Elastin broken down by proteases | emphysema |
| Impaired mucociliary clearance | bronchitis |
| Increased eosinophils | asthma |
| Increased secretions | bronchitis |
| Loss of elastic recoil | emphysema |
| mast cell destabilization | asthma |
| intermittent bronchospasm | asthma |
| increased airway resistance | bronchitis and emphysema |
| Hypercapnia | bronchitis, emphysema |
| Intermittent increase in mucous production | asthma |
