"CENTRAL NERVOUS SYSTEM" is the main division which is responsible for that maintains body temperature.
Step-by-step explanation:
The nervous system is separated into two major subdivisions: the “central nervous system” (CNS) and the “peripheral nervous system” (PNS). The “peripheral nervous system” (PNS) connects the “central nervous system” (CNS) to the remaining parts of the body. “Central nervous system” (CNS) from the “human nervous system” is responsible for maintaining the body temperature. The central nervous system comprises of two parts -brain and spinal cord. In the brain hypothalamus the part for controlling the body temperature.