Chronic obstruction of the flow of air through the airways and out of the lungs is very often irreversible. People having this condition suffer from chronic bronchitis or emphysema and are said to have chronic obstructive pulmonary disease or COPD.
This animation describes the respiratory system, its function, and focuses on the disease COPD, its causes, diagnosis and complications, and further explains the treatment options and self-care in detail.
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