Final answer:
The first step in hemostasis is vascular spasm, followed by platelet plug formation and coagulation.
Explanation:
The first step in hemostasis is vascular spasm. When a blood vessel is ruptured, the smooth muscle in the vessel wall contracts to reduce blood loss.
Platelet plug formation is the second step, where platelets become activated, stick to each other, and the wound site to limit blood loss.
Coagulation, or blood clotting, is the final step where fibrinogen is converted to fibrin, forming a mesh that traps platelets and erythrocytes to create a clot.
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