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Bronchitis: Lungs
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Bronchitis (pronounced brong-KIE-tis) is an inflammation of the air passages between the nose and the lungs. It affects the trachea (pronounced TRAY-kee-uh), or windpipe, and the bronchi. The bronchi (pronounced BRON-kee) are air tubes through which air flows into and out of the lungs.
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Bronchitis is an inflammation or infection of the lining of the tubes connecting the windpipe with the lungs. With bronchitis, less air is able to flow to and from the lungs, making breathing difficult and labored. There are two kinds of bronchitis:
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Bronchitis symptoms occur when people have an infection of the airways leading to the lungs. This is different from pneumonia where an infection occurs in the tissue of the lungs. In general the diagnosis of bronchitis is considered less severe than pneumonia. People with bronchitis symptoms can go on to develop pneumonia.
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Bronchitis refers to inflammation of the large breathing tubes of the lungs (as contrasted with pneumonia, which means infection or foreign material in the air sacs). These tubes are lined with glands that secrete mucus to trap any foreign material (dust and germs mainly) that get down in the lungs. When the lining of the bronchi is irritated and inflamed, the response is swelling of the lining (which makes the tubes smaller inside and harder to breathe through), and the secretion of increased amounts of mucus. The mucus may get thicker and stickier as well.
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Bronchitis is a disease of the respiratory system. It occurs when the air passages (bronchial tubes) leading from the trachea to the lungs become irritated or inflamed. This can be caused by viral infections such as a cold or the flu, or irritants such as tobacco smoke and industrial fumes.
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Bronchitis is an infection or inflammation of the large air passages to the lungs. (These airways are called bronchi.) When your child has a cold, sore throat, flu, or sinus infection, the virus that caused the misery can spread to the bronchi. Once the germs take hold there, the airways become swollen, inflamed, and partly blocked with mucus.
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