Which is the hottest organ in the human body?

Well humans are homeothermic animals. That means we maintain a stable internal temperature irrespective of outer environment temperature. The process is called thermal homeostasis. read more

So all internal body part and internal organ at same temperature of 37°C. The testis which hangs outside the body by scrotum is to maintain slightly lower temperature (2°C less) by blood circulation and surrounding air. read more

Health Guidance reports that while the human body maintains a consistent internal temperature, the skin is capable of increasing in temperature as a result of vigorous exercise or warm temperatures. In each case, if the affected person moves to a cool place and rests, the blood vessels contract, forcing blood inward and lowering the skin temperature. read more