What is Coagulation of Blood or What is Blood Clot ?



When there is an injury blood clots in 3-6 minutes . You know that when you cut yourself , the blood flows out of the wound for only a short period of time. Then the cut is filled with a reddish solid material . This solid is called a Blood clot . If blood did not clot, anyone with even a slight wound bleeds profusely. Lets get into subject :-

1.    When the blood flows out , the platelets release enzyme called Thrombokinase.

2.    Thrombokinase acts on other substance present in the blood called Pro-thrombin converting it into thrombin.


3.    Thrombin acts on other substance called fibrinogen , that is  present in dissolved state converting it into insoluble fibrin.

4.    The blood cells entangle in the fibrin fibres forming the clot.

5.    The fibrin fibres are attached to the edges of the wound and pull them together.



The Yellowish straw coloured fluid portion after formation of the clot is serum. This the story of Coagulation of Blood .