Final answer:
The correct sequence after blood vessel injury is vasoconstriction, platelet plug formation, coagulation, and fibrinolysis.
Step-by-step explanation:
The correct sequence of events after blood vessel injury is Vasoconstriction, Platelet plug formation, Coagulation, Fibrinolysis.
After an injury to a blood vessel, vasoconstriction occurs to constrict the flow of blood. This is followed by platelet plug formation, where platelets clump together and bind to the exposed collagen and endothelial lining. Coagulation then takes place, where a gelatinous clot made up of fibrin, platelets, and blood cells is formed. Finally, fibrinolysis occurs to dissolve the clot once the blood vessel has been repaired.