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Lung Facts

Your lungs are a pair of soft, spongy bags inside your chest. When you breathe in, air rushes in through your nose or mouth, down your windpipe and into the millions of branching airways in your lungs. The two biggest airways are called bronchi (singular bronchus), and they both branch into smaller airways called bronchioles….
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Breathing Facts

You breathe because every single cell in your body needs a continuous supply of oxygen to burn glucose, the high-energy substance from digested food that cells get from blood. Scientists call breathing respiration: Cellular respiration is the way that cells use oxygen to burn glucose. The oxygen in air is taken into your lungs, and…
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