There is no such organ.
The hypothalamus aids in regulation of the body's temperature.
An organ in some animals that allows for the regulation of body temperature, such as a countercurrent heat exchanger in some fish.
regulation of body temperature
Auto regulation (intrinsic) is when a cell, organ, or organ system automatically adjusts itself in response to a change in the environment. Extrinsic regulation involves the nervous and/or endocrine system detecting a change and sending a signal or releasing a chemical to facilitate change in another organ system, organ, or cell.
pancreas
Human organ that aids in digestion
The Thyroid i believe.
the pancrease
kidneys
kidneys
Thyronin also Thyroxine
The regulation of blood flow in an organism (such as deer) help the organism regulate the temperature by adjusting to the outside temperature.