Plants, Animals and Humans are the three elementary »closed spaces » of Terrestrial Life.
The nervous system coordinates the human body by continuously adjusting its balance according to the external environment thanks to a triangular seat and binary signals.
To stay healthy, the body evacuates its waste and retains the essential nutrients, it is this attention to the respect of balance that the urinary system achieves.
To initiate an immune response, pathogens are distinguished from normal cells, and then they are neutralized.
The human body is a set of differentiated specific elements, which transfer their information, for common actions.