In this type, Bronchial mucous alveoli develop bleeding lesions as the dividing epithelial invade the bronchiole wall.
Some of the blood veins in the airways may develop thinner walls when the airways deteriorate. These have a higher propensity to shatter and result in lung haemorrhage. Hemoptysis is the term for this. A portion of your lung may potentially collapse if the mucus thickens and completely obstructs the airway.
The large tubes, or bronchi, that connect to your trachea (windpipe) and carry air to your left and right lungs are what we refer to as airways. You have them in your chest. "Bronchi" is the plural form of the word "bronchus." Air enters your left bronchus and travels to your left lung.
Hence, Bronchial mucous alveoli as the dividing epithelium invades the bronchiole wall, bleeding lesions of this sort form.
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