This function is carried out by brain and nervous system .
Define set point?
The set point is not fixed value but fluctuates in response to internal and external factors .
nervous system is responsible for the regulation and maintaining the constant body temperature , with the help of receptors .
If receptors detect any kind of drop in body temperature and send this information to the brain . Then brain process the information and send impulses to effector organs to carry out responses which increases body temperature and these responses helps in restoring the optimum temperature.
Hence , the function is carried out by the brain and nervous system.
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