Respiratory device / aparato respiratorio

Respiratory device / aparato respiratorio
the only cells that have no nucleus.

The respiratory device generally includes pipes, as the bronchi, used to load air in the lungs, where the gaseous exchange happens. The diaphragm like any muscle can contract and to relax. On the lungs having relaxed on having possessed space they expand to fill with air and on the same one having contracted it is expelled. These respiratory systems change in agreement to the organism.
In human beings and other mammals, the respiratory system consists of airways, lungs and respiratory muscles that were measuring in the movement of the air so much in as out(like out) of the body. Gas exchange: it is the exchange of oxygen and dioxide of carbon, of the animal with his way.