Which statement best describes collagen during healing?

• A. Collagen is formed during the proliferation stage and is restructured during remodeling
• B. Collagen is formed during remodeling stage and remains unchanged during proliferation
• C. Collagen is not formed at any stage
• D. Collagen is formed during epithelization

Answer: (A)

Collagen production begins in the proliferative (fibroblastic) phase, where fibroblasts lay down new collagen to form granulation tissue. This establishes the scaffold for healing. In the remodeling (maturation) phase, that collagen is reorganized and cross-linked, and the tissue shifts from type III to the stronger type I collagen, increasing tensile strength over time. Epithelization focuses on surface epithelial cell migration to cover the wound and does not drive collagen synthesis, so collagen isn’t formed mainly during epithelization. Therefore, the statement that collagen is formed during the proliferation stage and is restructured during remodeling best describes the process.