AP BIOLOGY

Detailed explanation-1: -These clots, which turn into scabs as they dry, are created by a type of blood cell called a platelet. The clot also contains a protein called fibrin, which forms a net to hold the clot in place.

Detailed explanation-2: -What causes scabs? Scabs form as a defense against infection, blood loss, and debris. When you get a scrape or cut, platelets-or blood clot cells-will begin to clot to stop bleeding and prevent any excess fluid from flowing out. As the blood or wound dries, it forms the hard layer of a scab.

Detailed explanation-3: -To distinguish between a scab and eschar, remember that a scab is a collection of dried blood cells and serum and sits on top of the skin surface. Eschar is a collection of dead tissue within the wound that is flush with skin surface.

Detailed explanation-4: -Platelets, also called thrombocytes, are tiny components of your blood that help with clotting. Platelets are your body’s natural bandage to stop bleeding.

Detailed explanation-5: -The preferred medical term is crust or eschar, the latter being Greek for scab. The edge of an eschar can keep a wound from closing by secondary intention. And an eschar is a sign that a wound is too dry to heal as fast as possible. Having noted that, a crust is the best nature can do in many situations.