Because irrigation was the source of wealth and foundation of the empire, the Moche culture emphasized the importance of circulation and flow. Expanding upon this, Moche artwork frequently depicted the passage of fluids, particularly life fluids through vulnerable human orifices. There are countless images of defeated warriors losing life fluids through their nose, or helpless victims getting their eyes torn out by birds or captors. Images of captive sex-slaves with gaping orifices and leaking fluids portray extreme exposure, humiliation, and a loss of power.