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No a person can't live without blood vessels because blood vessels are what gets blood through your body and blood is the life essence which keeps us alive.
Nervous impulses sent to muscles generate extra metabolic heat through shivering. Otherwise, your blood vessels transport warm blood from the internal organs to our , cold, skin, then your blood will lose heat.
Blood vessels widen and narrow due to body temperature conditions. for example, if the body is too hot the blood vessels will widen to bring more blood closer to the outer layer of the skin to release some heat. (this is why your face gets red when working out) when the body is too cold the blood vessels will narrow to prevent heat loss by the blood and face becomes more pale.
As your body gets cold, your blood retreats toward your center mass in an effort to protect your vital organs.
It helps because it gets rid of any diseases that are in the blood vessels.
Oxygen is distributed throughout your body by your blood traveling in blood vessels and carrying red blood cell that contain hemoglobin, the molecule that holds the oxygen until it gets where it is exchanged for carbon dioxide to be removed from your body.
When body temperature drops below normal, dermal vessels are likely to constrict to maintain core body temperature, limiting heat loss through the skin. In contrast, when body temperature is elevated, the vessels in the dermis are likely to dilate to help the body release excess heat.
The smallest blood vessels where the blood gets to interact with the bodies tissues.
If your body temperature gets too high, then one way that the body goes about lowering it, is to cause peripheral blood vessels to dilate, thus causing more blood to flow through these vessels, ie the vessels of the skin esp. This is why a light skinned person will appear flushed when they are very warm. Blood carries a lot of heat, so when blood rushes through these peripheral vessels near the skin surface, they will give up heat to the environment, thus cooling down the body. The reverse will happen in body temperature falls too much.
Coffee contains caffeine, which causes diuresis (increased urination) and Vasoconstriction (constriction of the blood vessels). With blood vessel constriction, less blood gets to your limbs causing some people (especially smokers) to feel cold.
it is controlled by the brain which tells the liver to create good cholesterol in the body. however when bad cholesterol gets inside the body it clogs up the blood vessels leading to high blood pressure and the body can not remove it.