Vascular + platelet phase =
primary hemostasis
Vascular phase
vascular spasm
Platelet phase
sticking
Coagulation phase
secondary hemostasis
Extrinsic pathway
tissue + calcium + factor VII = active enzyme
Intrinsic pathway
plasma coagulation factors + damaged vessel = active enzyme
Common pathway
extrinsic enzyme + intrinsic enzyme
Prothrombin»>thrombin
enzymes + factor X + factor V
Thrombin
converts fibrinogen to fibrin
Fibrinolysis
break down of fiber after wound closes, creates FDPs
FDP
fibrin degradation products
Fibrinolysis
controlled by plasma from plasminogen by tissue plasminogen activator
t-PA
tissue plasminogen activator