Respiratory+System

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__The Respiratory System__
The main function of the respiratory system is to add oxygen to the blood, which in return, supplies oxygen to the whole body. By breathing, humans inhale oxygen (and some carbon dioxide) and exhale the waste product, which is carbon dioxide. We breathe from the nose and mouth which hen goes to the lungs via the trachea.

The Respiratory System is a system for oxygenating the blood and removing carbon dioxide. Deoxygenated blood containing carbon dioxide is carried to the lungs, where the carbon dioxide is removed and the blood is enriched with oxygen so it can then be carried to nourish cells. The main organs in the Respiratory System are the nose, trachea, bronchi, and lungs.