The Excretory System

The Lungs

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Cone-shaped lungs, located inside the thorax, also known as the chest,) and also inside the ribcage, are covered in a thin membrane called pleura.  The right lung, on the right side of the heart, has three lobes, while the left lung, on the left side of the heart, has two lobes.  The diaphragm, is below the lungs, and separates the chest and abdominal cavities.  The lungs get rid of the carbon dioxide created by broken down carbohydrates.