because your body is always going to be hot and your temparature is always 37degrese if your low your cold and if your high your to hot and need to go to the doctor.
The blood vessels decay
Blood vessels vasconstrict
In hot weather - blood vessels dilate (widen) - to allow the exchange of heat between the blood and sweat glands. The sweat evaporates - cooling the blood.
pfdfk\
Some weakened blood vessels will swell or worse they can break. If the break happens in the brain a type of stroke can occur.
The blood vessels near the skin enlarge so that the hot blood is nearer the surface of the skin to transfer heat away from the body.
When blood is pumped into the thin-walled blood vessels of the lungs, carbon dioxide is replaced with oxygen.
When blood is pumped into the thin-walled blood vessels of the lungs, carbon dioxide is replaced with oxygen.
When blood is pumped into the thin-walled blood vessels of the lungs, carbon dioxide is replaced with oxygen.
you get goosebumps.
The size of blood vessels varies enormously, from a diameter of about 25 mm (1 inch) in the aorta to only 8 μm in the capillaries.
The blood goes to all of the body parts.