Human respiratory system
Organs that work to obtain fresh air and remove used air from the form the respiratory system . The nose,the windpipe and two lungs form the respiratory system. We breathe in air through the nose. From the nose,air enters the windpipe.The windpipe takes air to the lungs and the lungs get filled with fresh air. Fresh air has a good amount of oxygen gas . The blood flowing through the lungs takes in oxygen gas and carries it to every part of the body. The body uses oxygen gas to produce energy. The body also produce carbon dioxide gas. The body does not need carbon dioxide gas; it is a kind of waste . Every time we breathe out air, some of this carbon dioxide gas is removed from the body.
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