Although organizations are made up of parts or subsystems, they are themselves subsystems within larger systems. Just as the human heart is a subsystem within the body's physiological system, the Graduate School of Business at the University of Texas at Austin is a subsystem within the UT-Austin system. If we focus our attention on UT-Austin as the system, then we also recognize that it functions as part of the larger suprasystem of the University of Texas canipuses (which include Austin, Dallas, EI Paso, and San Antonio, among others). So not only are there systems but there are subsystems and suprasystems. The classification of these three depends on the unit of analysis. If we focus our attention on the Graduate School of Business and make it the system, then UT-Austin becomes the suprasystem, and departments within the graduate school, such as accounting and management, become the subsystems.