Control Of Body Temp

• Body temperature is monitored and controlled by thermoregulatory centre in the breain
• the thermoregulatory centre contains temperature receptors sensitive to the temperature of the blood
• The skin contains temperature receptors and sends nervous impulses to the thermoregulatory centre
• If body temperature is too high, blood vessels dilate (vasodilation) and sweat is produced from sweat glands. Both theses mechanisms can transfer energy from the skin to the environment.
• If the body temperature if too low, blood vessels constrict (vasoconstriction), sweating stops, and skeletal muscles contract (shiver).