+The **lung** is a primary respiratory organ in most air-breathing vertebrates, central to the process of [Breathing](/wiki/breathing). These paired organs draw in [Oxygen](/wiki/oxygen) from the air and expel carbon dioxide, fueling the body's life processes.
+## See also
+- [Heart](/wiki/heart)
+- [Diaphragm](/wiki/diaphragm)
+- [Circulatory System](/wiki/circulatory_system)
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