CHRONIC OBSTRUCTIVE PULMONARY DISEASE

Chronic- means long standing (over 6months) Obstructive- means block/narrowing (of airways) Pulmonary- means lungs. COPD is a longstanding narrowing of the airways within the lungs. COPD is an umbrella term for chronic bronchitis and emphysema. What’s the difference between chronic bronchitis and emphysema? ................
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