How can the blood coagulation process be explained

Question

How can the blood coagulation (clotting) process be explained?

Answer 1

Blood clotting includes a series of chemical reactions whose respective products are enzymes which catalyze the following reactions (that is why the clotting reactions are named as cascade reactions). In plasma thromboplastinogen transforms in thromboplastin, a reaction triggered by tissue and platelet factors released after injury of blood vessel.

Thromboplastin then catalyzes along with calcium ions the transformation of the prothrombin in thrombin. Thrombin then catalyzes a reaction which produces fibrin from fibrinogen. Fibrin, as an insoluble substance, precipitates to form a network which traps red blood cells and platelets forming the blood clot and containing hemorrhage.