reinterpretations of the ankh symbol part 2 - Asar Imhotep
reinterpretations of the ankh symbol part 2 - Asar Imhotep
reinterpretations of the ankh symbol part 2 - Asar Imhotep
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10<br />
each <strong>of</strong> <strong>the</strong>se airways are tiny sacs called alveoli. You could think <strong>of</strong> <strong>the</strong>m as leaves at <strong>the</strong> end <strong>of</strong><br />
branches. A healthy lung has hundreds <strong>of</strong> millions <strong>of</strong> <strong>the</strong>se alveoli. Each alveolus is covered with a<br />
thin layer <strong>of</strong> fluid that helps you brea<strong>the</strong>. It does this by keeping <strong>the</strong> alveoli open so oxygen is<br />
absorbed and carbon dioxide is excreted. So we take in oxygen and release carbon dioxide as a<br />
waste product.