Completar frases Regulation of body TemperatureVersión en línea Play this game to help understand the regulation of body temperature por Leah Lloyd 1 constriction chemical negative heat temperature homeostasis dilation glucose 37 Normally , body temperature is maintained at degrees celcius . It is important that body temperature be regulated because changes in the temperature alter the speed of reactions in the body . About 40% of the energy in a molecule is stored in the bonds of adenosine triphosphate ( ATP ) to be used by the cells . The remaining 60% of the energy is in the form of to maintain body . The skin has two ways that it helps to regulate body temperature : by and of blood vessels and by the activity or inactivity of the sweat glands . Both of these mechanisms are examples of feedback in maintaining .