Beginning of Essay
Blood is carried throughout the body within a network of blood vessels. When our tissues are injured (cut on skin), are blood vessel is disrupted, and we bleed through the holes in the blood vessel wall. Normally, we stop bleeding through two integrated processes, ....

Middle of Essay
.... have either have stopped the production of von Willebrand factor or they produce a molecule that does not function normally, which cause their platelets do not adhere properly when blood vessels are injured, therefor it takes longer for a blood clot to form. In some patients, the factor VIII (the anti-hemophilic factor that helps blood clot) is also reduced, and blood clotting is severally impaired. In patients with hemophilia, the primary problem is the decrease or absents the factor VIII, while the von Willebrand factor is normal. Erik von Willebrand, who lived in Helsinki, Finland, founded in 1924. Who described a new type of bleeding disorder ....