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How the lungs work
They supply us with oxygen and are part of the body's defense system. We don't even think about breathing. But if you can't breathe, nothing else matters. |  | The lungs of the unborn baby
The lungs of the foetus is different to the other organs, such as the kidneys, the heart and the liver, all of which already start functioning inside the womb. | | What is a tracheotomy?
A tracheotomy is a surgical procedure in which an incision is made in the front of the patient's neck and a breathing tube is inserted through a hole into the trachea. |
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