it could be Petechia but basically its when youre body is not getting enough oxygen to certain parts of your body and those parts result with broken/popped blood vessels, this happens to me quite often as well
When blood vessels dilate so close to the skin, it would cause an outward appearance of flush on the skin. Blushing, for example.
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Heat causes vasodilation, which means the blood vessels in your feet get larger in diameter, thus causing swelling. On the other hand, cold causes vasoconstricion, narrowing of the blood vessels, and would cause the swelling to diminish.
Because movement would damage the delicate blood vessels.
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The heart and the blood vessels of the body.
As you grow, your blood vessels do as well. This is why only an adult human body's blood vessels, when all connected, can reach halfway to the moon, whereas a child's would not. These blood vessels also stretch when you grow or flex.
You would be called a dead person because, without blood vessels, your blood can't travel, and if your blood can't travel, you can't breathe, and if you can't breathe, you will die.
I am not 100% sure if dehydration could cause vasodilation (swelling of a blood vessel), although it does make sense. As the temperature of the body rises, the blood vessels expand to release heat quicker. If one becomes dehydrated, and is then covered in ice packs, they may experience vasoconstriction, causing the blood vessels to constrict and hold heat in more, which would be unwanted.So if you were asking if dehydration causes dilation of the blood vessels, then yes.
How many kilometers of blood vessels are in your body? If they could be laid end to end, the blood vessels would cover a distance of about 60,000 miles (96,500 kilometers).
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tube like structures which carries the blood