Blood is one of the easiest parts of the body to donate. Blood transports oxygen, carbon dioxide, nutrients, and waste through the body. Blood also regulates your body temperature and is important in blood clotting. The process of blood clotting is also called hemostasis. This starts with vasocontriction of the damaged blood vessels. Then the platelets form a "plug" over the wound. This is activated by fibrin prothrombinase. This changes into thronbin which forms the blood clot.
This blood clotting process is important to all of us. If anyone loses too much blood, they can eventually die. If you have ever had a large cut, you know the blood will clot and dry up. This is what is supposed to happen. Without this process we would lose to much blood.
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