The document outlines the four stages of wound healing:
1. Hemostasis phase occurs within 5-15 minutes and involves vasoconstriction, platelet degranulation, fibrin clot formation, and release of growth factors.
2. Inflammatory phase lasts 24-48 hours and involves neutrophils and macrophages cleaning debris and releasing cytokines and growth factors.
3. Proliferation phase takes 3-4 days and involves re-epithelialization, granulation, angiogenesis, and fibroplasia.
4. Maturation phase occurs over days to years and involves collagen organization, wound contraction, and scar maturation.