Body Organization

Human body temperature is regulated very tightly to keep it to 98.6 degrees Fahrenheit by an internal thermostat found at the base of the brain. If your body gets too cold, you shiver to generate heat and regain your normal body temperature. If your body gets too warm, the blood vessels dilate and you also sweat to regain normal temperature. These methods of adjusting to body temperature help your body systems maintain homeostasis despite changing external conditions.