Category:Respiratory system
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The respiratory system is the (anatomical) biological system of any organism that engages in metabolic gas exchange. Even plants have respiratory systems, taking in carbon dioxide and emitting oxygen. This category covers the structure of respiratory systems. The complementary category for the details of the function of respiratory systems is Category:Respiratory physiology.
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Subcategories
This category has the following 6 subcategories, out of 6 total.
