The role of negative feedback mechanisms in homeostasis is essential to maintaining stability within biological systems. These mechanisms detect deviations from a set point and activate processes to counteract changes. For example, when body temperature rises, mechanisms such as sweating activate to cool the body down, restoring the temperature to its normal range. Similarly, in regulating blood glucose levels, when levels rise, insulin is released to lower them. This dynamic balance allows organisms to respond effectively to internal and external changes, ensuring physiological function remains optimal.