Memory Anchor:

• Super Challenge:

  Stretch:

  Challenge:

Key Questions:

1. What controls body temperature and how does it do it?
   • Body temperature is monitored and controlled by the thermoregulatory centre in the brain. The thermoregulatory centre contains receptors sensitive to the temperature of the blood.
2. What is the role of the skin in monitoring body temperature?
   • The skin contains receptors which detect changes in temperature and send impulses to the brain.
3. What happens to the body when the core body temperature is too low?
   • If the body temperature is too high, blood vessels dilate (vasodilation) and sweat is produced from the sweat glands.
4. How do vasodilation and sweating help cool down the body?
   • Vasodilation and sweating transfer thermal Energy from the skin to the environment.
5. What happens to the body when its core temperature is too low?
   • If the body temperature is too low, blood vessels constrict (vasoconstriction), sweating stops and skeletal muscles contract (shiver).
6. (HT only) How does vasoconstriction help increase the body temperature?
   • (HT only) Vasoconstriction causes blood flow to the skin to decrease and slow down therefore decreasing the amount of Energy lost to the environment from the skin.