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Respiratory system



The system which includes bodily organs chiefly involved in gaseous exchange (respiration) between the body and the external environment.


The respiratory system functions by taking in oxygen to the body and giving off carbon dioxide to the external environment. This gas exchange happens in the alveolar region of the lungs. When the blood is oxygenated the blood then delivers the oxygen to other parts of the body.

The respiratory system of vertebrates consists of the following bodily organs:

See also: respiration

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