Final answer:
Blood clotting involves vascular spasm, platelet plug formation, and coagulation to repair the vessel.
Explanation:
The three stages of blood clotting are:
- Vascular spasm: Constriction of blood vessel to reduce blood flow.
- Platelet plug formation: Temporary seal by platelets on vessel openings.
- Coagulation: Repair of vessel via fibrin formation once blood leakage stops.
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