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the Precapillary Sphincters control blood pressure and body temperature by regulating the flow of blood to the capillary bed.
Only when you shiver - "useless" work to produce heat.
There are blood vessels in the ears that help maintain body temperature and the bigger the ear the more surface area it has to work with in order to regulate the temperature.
Your question is not quite clear, but if you are asking "does the circulatory system help maintain body temperature?" then I would the answer is yes. It moves blood throughout the body which regulates the body temperature. Doing so also supplies supplies oxygen and nutrients for the cells in your body.
The skin helps to regulate body temperature through the process of vasodilation and vasoconstriction. When the body is too hot, blood vessels near the surface of the skin dilate, allowing more blood to flow to the surface and release heat through sweating. When the body is too cold, blood vessels constrict to reduce blood flow to the surface, conserving heat in the body's core.
it loses energy as heat.
Insulating tissue that provides warmth.
The regulation of blood flow in an organism (such as deer) help the organism regulate the temperature by adjusting to the outside temperature.
Thyroid hormones help regulate body temperature in addition to the hypothalamus of the brain.
Yes. Their shells help regulate body temperature.
They help regulate blood pressure (I think)
Yes !