INTEGUMENTARY SYSTEM

                                              Thermoregulation

-Integumentary system helps regulate internal temperature

-Sympathetic Nervous system keeps tab on and reacts to the internal temperature

-About 500 mililiters (mL) of sweat is excreted every day

-When the body is in heat, engaged in exercise, or both, the Sympathetic Nervous system stimulates sweat glands

         *When the sweat evaporates, the skin is cooled

         *Arterioles dialate to let out excess heat

                      -This is the skin redness experienced while exercising

-In cold temperatures arterioles constrict

          *White color of the skin

          *Lessens heat loss