The first stage in hemostasis is vascular spasm, second is platelet drug formation and third stage is coagulation.
The first stage of hemostasis involves vascular constriction. The second stage involves disruption of prostacynin, endothelial collagen exposure and degranulation and serotonin, thromboxane A2 and ADP. The third stage is also known as clotting and occurs through conversion of fibrinogen to fibrin through intrinsic and extrinsic mechanisms.
Hemostasis refers to the process that is responsible for wound healing and it stops bleeding through coagulation. It prevents blood flow to the external environment, which on occurence will cause death. It converts the liquid blood to gel. The processor hemostasis involves three steps as mentioned above.
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