first of all.. to catch up on what i missed the day before.. we talked about (without me) donated blood and artificial blood.
turns out not all of the blood that is donated is used, only parts of it. like anemic people need the red blood cells, people with severe bacterial infections need white, etc.
as for arteficial blood, it is a chemical that can actually last longer than normal blood. however, it only does the role of delivering oxygen and taking carbon dioxide, it does not fight any infections.
anyway.. onto today's topic. blood in organs, would be composed of different things. besides oxygen that comes out of blood, and carbon dioxide that goes in.. it depends where you are really.
eg. blood would be loaded with nutrients after leaving the intestines.
blood would have heaps of waste products on its way to the kidneys, and heaps of water. it'll dump all that off, and some water and nutrients could be returned.
blood from the lungs obviously would have heaps of oxygen in it.
blood from the liver would have glycogen in it, or it could carry toxins to the liver such as alcohol.
and of course, blood would carry carbon dioxide from any tissue that it passes through, after leaving some oxygen behind.
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