A coat, and often, ear muffs.
Lipids
fat tissue
Hair and fur
Skin's regulatory function is mostly related to temperature regulation. A layer of fat helps hold in heat. Dilation or constriction of the blood vessels in the skin release or conserve heat. Sweating also helps cool your body through evaporation.
The hypodermis, the deepest layer of the skin, helps conserve heat to the body through its insulating properties. It contains a layer of adipose tissue, or fat, which acts as a thermal insulator, preventing heat from escaping the body. This adipose tissue also provides cushioning and protection to internal organs.
Cold Blooded animals, they can't create body heat so they need to find it somewhere else. If warm blooded animals get to the point that their in a climate they are not suited for, they must conserve their body heat. But technically ALL animals conserve body heat.
True. The ability of water to retain heat helps cells maintain homeostasis. Water is the most abundant and important nutrient in the body.
to conserve heat
Shivering and vasoconstriction... B for plato users (:
Penguins are warm-blooded birds with a core body temperature of between 39 and 40 degrees Celsius. Their extremities are considerably colder, and this helps their survival, so they can conserve heat for their vital body organs.
They do it to conserve and share body heat.