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Scabs are basically a bunch of platelet proteins that gather at the surface of the cut. This happens for several reasons. First, it stops blood loss, which can be very dangerous. Second, it keeps pathogens such as bacteria and viruses out of the wound, so they cannot infect the body. The scab protects the wound until the body can heal itself and replace the lost skin with scar tissue. Someone with a clotting disorder does not have platelets that function correctly, and either cannot clot or clot too much. If they cannot clot, a simple paper-cut could be catastrophic. If they clot too much, they are at risk for stroke or heart attack.

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14y ago

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What part of the circulatory system forms scabs to stop cuts from bleeding?

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