Depicting Chronic Bronchitis Comparing 840391312

Tags: human health healthy healthcare respiratory illness medical concept cross disease education biology science problem lung section system airways anatomy mucus diagram comparison sickness obstruction lungs tract chronic bronchial diaphragm bronchitis inflammation emphysema bronchi trachea inflamed pulmonary bronchus alveoli COPD lung disease respiratory tract respiratory system medical illustration bronchioles chro human lungs lung anatomy healthy alveoli