Why Does Blood Clot Outside the Body

Young healthy person can lose entire third of the total amount of his blood, but will nevertheless survive. Continuous bleeding or blood loss when we are sick can be very dangerous.

Nature protect us from this danger because the blood has the ability to clot. But if clotting occurred in the circulatory system, it could be just as dangerous. When the blood is poured into a very smooth and greased glass bowl, it will not clot! If in the blood plunge glass rod, it will not clotting again. But, when you take a wooden stick, began to clot. Therefore, it seems to be necessary inclined surface or injuries of blood vessels to begin the process of blood clotting.

First, in the blood appears very fine threads of a substance called fibrin. These threads are provided in all directions and create a kind of network. They captured all blood cells, just as a spider web catch insects. At this place, the blood stops moving and turns into a kind of pond with stagnant blood cells.

Fibrin threads are strong and very elastic and retain blood cells connected in a clot. A blood clot is the plug that nature created to protect us from loss of blood. Blood clotting time is not the same for all people. There are people whose blood clotting very slowly or not at all clotting. This disease is called hemophilia (haemophilia).

Hemophilia (haemophilia) is a disease of the group of coagulopathies (disturbances in blood coagulation system), which is inherited by a recessive X-linked chromosome. Patients are mostly men, while women are carriers of this disease. The incidence of type A is about 1:5000 male newborns, while hemophilia B is less frequent and is found in approximately 1:15000 newborns.

Hemophilia is a disease that is often observed in the royal families. For example, the Russian prince Alexei Nikolaevich, son of the last Russian Tsar Nicholas II, suffered from hemophilia. Hemophilia is answering in Spanish, German and English royal families. Queen Victoria of England, was gene for this disease transferred to her son Leopold and several daughters. Interestingly, the wife of Russian Emperor Nicholas II, Alexandra Feodorovna inherited the gene for this disease (which was transferred to Alexei) exactly of Queen Victoria, who was her grandmother.