What functions does vitamin A have in wound healing?

What functions does vitamin A have in wound healing?

• A. Cellular differentiation
• B. Epithelialization
• C. Collagen synthesis
• D. All of the above

Answer: (D)

Vitamin A supports wound healing through several interconnected roles. It promotes cellular differentiation, which helps cells at the wound site become the appropriate epithelial and immune cells needed for tissue restoration. It enhances epithelialization by supporting keratinocyte proliferation and migration across the wound bed, helping to re-establish the protective epidermal layer. It also influences collagen synthesis and remodeling, supporting fibroblast activity and the organization of the extracellular matrix to strengthen the repaired tissue. Because vitamin A contributes to all these processes, the best answer is that all of the above are functions vitamin A has in wound healing. In deficiency, these healing processes are impaired, underscoring vitamin A’s important role in proper wound repair.

Vitamin A supports wound healing through several interconnected roles. It promotes cellular differentiation, which helps cells at the wound site become the appropriate epithelial and immune cells needed for tissue restoration. It enhances epithelialization by supporting keratinocyte proliferation and migration across the wound bed, helping to re-establish the protective epidermal layer. It also influences collagen synthesis and remodeling, supporting fibroblast activity and the organization of the extracellular matrix to strengthen the repaired tissue. Because vitamin A contributes to all these processes, the best answer is that all of the above are functions vitamin A has in wound healing. In deficiency, these healing processes are impaired, underscoring vitamin A’s important role in proper wound repair.