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The respiratory system is the biological system of any organism that engages in gas exchange. Even trees have respiratory systems, taking in carbon dioxide and emitting oxygen.

Organ systems | Respiration

Kategorie:Dýchací soustava | Kategorie:Atmungsapparat | Categoría:Aparato respiratorio | Kategorio:Spira Sistemo | Catégorie:Système respiratoire | Category:Respirala sistemo | Categoria:Sistema respiratório | Thể loại:Hệ hô hấp

 

This article is licensed under the GNU Free Documentation License. It uses material from the "Category:Respiratory system".

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