The platelets in the coagulation process

The platelets in the coagulation process
A: Unbroken vase. B: Process of injury. C: Platelets adhesion to the wall vase and release of factors of intracellular signalling that promote the vasoconstriction, with the reduction of the blood vessel, and induce the production of other composites that will participate of the coagulation. D: Platelets Aggregation: Change of form of platelets and linking plaqueta/plaqueta. E: Fibrin and blood cell deposition on the platelets drain plug.