During which phase does blood vessel formation, capillary bedding, capillary arcade formation, and collagen synthesis occur?

During which phase does blood vessel formation, capillary bedding, capillary arcade formation, and collagen synthesis occur?

• A. Proliferation
• B. Hemostasis and inflammation
• C. Epithelization
• D. Remodeling

Answer: (A)

The proliferative phase is focused on building new tissue. During this time, angiogenesis brings in blood supply to the wound, so blood vessel formation, capillary beds, and capillary arcades develop to nourish the healing area. Fibroblasts generate collagen to lay down the extracellular matrix, providing structure and strength. Epithelial cells also start to migrate to cover the wound, but the hallmark activities you described—new vessels and collagen synthesis—are central to this phase. In contrast, hemostasis and inflammation center on clotting and inflammatory cell arrival; remodeling mainly reshapes and strengthens the tissue by reorganizing existing collagen rather than creating abundant new capillaries. So those processes fit best with the proliferative phase.

The proliferative phase is focused on building new tissue. During this time, angiogenesis brings in blood supply to the wound, so blood vessel formation, capillary beds, and capillary arcades develop to nourish the healing area. Fibroblasts generate collagen to lay down the extracellular matrix, providing structure and strength. Epithelial cells also start to migrate to cover the wound, but the hallmark activities you described—new vessels and collagen synthesis—are central to this phase. In contrast, hemostasis and inflammation center on clotting and inflammatory cell arrival; remodeling mainly reshapes and strengthens the tissue by reorganizing existing collagen rather than creating abundant new capillaries. So those processes fit best with the proliferative phase.