Which of your cells respond to maintain temperature and how do they do this?

Several cells aid in maintaining and/or regulating the body temperature. Cells in the different system of the body including Sensors in the nervous system,  hypothalamus in the CNS and sweat gland in the Endocrine system. Normal body temperature usually ranges at a set point from about 36.5 to 37.5 celsius.
When the body falls below or above this set points, several cells including those aforementioned aids to stabilize the body temperature back to its set point.

When there is a deviation from the set point, the sensors in the CNS and PNS send information to the hypothalamus which regulates temperature in the brain. Blood vessels then either constrict (if cold or below body temperature) to preserve heat) and the skeletal muscles contribute by helping the body to shriver in order to raise body temperature. Contrary, blood vessels will dilate if the body temperature has risen beyond 37.5 celsius. In this case, the sweat gland helps secrete sweat to help cool down the body.