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X-Plain_ Lung Cancer Reference Summary

Source: www.nlm.nih.gov
Topic: Lung
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Sort Desciption: Lung cancer is the number one cancer killer of men and women. Over 165,000 people die of lung cancer every year in the United States. Most cases of lung cancer are related to cigarette smoking. ...

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Lung cancer is the number one cancer killer of men and women. Over 165,000 people die of lung cancer every year in the United States. Most cases of lung cancer are related to cigarette smoking. Therefore, if you smoke, it is best to stop smoking as soon as possible. This reference summary will help you to better understand lung cancer and the treatment options that are available. Anatomy Oxygen is vital for life. Without it, death occurs very rapidly. The lungs allow us to fill our blood with oxygen. The air we breathe comes in close contact with the blood in the depth of the lungs. The blood then fills up with oxygen and releases unwanted carbon dioxide, CO2. When we breathe, the air goes through the mouth and nose. From there, it goes to the air pipe, known as the trachea. From the trachea it goes into an increasing number of smaller tubes, called bronchial tubes. Small balloon-like sacs called alveoli are at the end of the tubes. The walls of the alveoli are very thin. On the other side of the walls small blood vessels exist. The very thin wall of the alveoli allows the oxygen to go into the bloodstream and also allows CO 2 to go from the blood to your lungs to be exhaled. The inner lining of the bigger bronchial tubes secrete a special substance called mucus. The mucus helps trap dirt from the air. Mucus is continuously expelled from the lungs. Just like with saliva, mucus is often swallowed, ...

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