Emphysema Free Essay, Term Paper and Book Report
Emphysema is not curable, but it can be treated. Those who have it can be helped to live with it. It is a destructive disease for thousands of Americans and their families. Over 1100 people die of it as a major cause each year. It is believed that emphysema often is a late effect of chronic infection or irritation of the bronchial tubes. These tubes, the bronchi, connect the windpipe with the lungs. The bronchi look like branches of a tree, with the branches becoming smaller and smaller until each one ends in a cluster of tiny air spaces in the lung. From these tiny spaces (alveoli) oxygen enters the blood when air is breathed in, and waste gas (carbon dioxide) is removed from the lungs by breathing out. When the bronchi become irritated, some of the airways may be obstructed, trapping air in the lung beyond them. Or the walls of the tiny air spaces may tear, for various reasons. The small blood vessels in the walls disappear. Less contact between blood and air results.
If infection or irritation continues or is repeated for a long time and the stretching and destruction of the wa......
Word Count: 333
Page Count: 1.3 (250 words a page / double spaced)
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