Final answer:
Thermoregulation is controlled by the hypothalamus in the brain, which acts as the central unit for maintaining the body's internal temperature and overall homeostasis.
Step-by-step explanation:
Thermoregulation is maintained centrally in the brain by the hypothalamus. This structure is responsible for regulating homeostasis, which includes controlling the body's internal temperature. The hypothalamus acts as the executive region in charge of the autonomic nervous system and the endocrine system, which are both crucial for maintaining a stable body temperature. While the amygdala sends signals to the hypothalamus regarding emotional responses and can influence thermoregulation indirectly, it is not the central regulator of thermoregulation.