Answer: Platelets, which are produced in the bone marrow act to form clots and stop bleeding at the site of a wound. Calcium, vitamin K, and the protein fibrinogen work with the platelets in the formation of a clot. The platelets and fibrinogen allow for the formation of fibrin which makes a web-like mesh at the wound site trapping blood cells within in. This then hardens and eventually becomes a scab.
Answer: If your blood has too few platelets mild to serious bleeding canoccur. Platelets, along with other blood cells, are made in thebone marrow. As they travel through blood vessels, they clumptogether to stop bleeding in a damaged vessel.