2.88 describe the role of the skin in temperature regulation, with reference to sweating vasoconstriction and vasodilation

- Core temperature is controlled by Hypothalamus.
- The skin regulates body temperature to protect against hyperthermia and hypothermia.
- Skin is responsible for temperature regulation within our body. The core temperature of our body is 37 C.
Vasoconstriction
- capillaries narrows, so they carry less blood. This keeps heat inside the body, reduces sweating.
- Hair erection.
- Shivering.
- Insulation (from a layer of fat under the skin).

Vasodilation
- Capillaries widened so more blood can be carried to the surface. heat transferred out of the body through conduction and radiation.
- Sweating
- Hairs lay flat