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

Key Points
1. To keep in a state of isotonic homeostatis in most cells of the body, the skin reacts to different temperatures by doing different things.
2. There are many different types of sensors in the skin; Pain sensors are at the skin surface, touch sensors are attatched to the base of our hairs, some pressure sensors are deep in the skin and some pressure sensors are close to the surface. Temperature sensors respond to temperature.
3. We sweat when we are hot because the heat stimulates the temperature sensor to send information to the brain telling us that we are hot. Then the brain responds by sweating from pores in our skin, and the sweat evaporates and we get cooler.
4. We get goosebumps and shivering when we are cold because the cold stimulates the temperature sensors in the skin to send information to the brain telling us that we are cold. The brain then responds by giving us goosebumps and increasing the surface area of our body to absorb more heat, and to shiver.