Tissue Integrity Test 6 Practice

What is the role of vitamin A in wound healing?

Quickens fibroplasia Acts as an antioxidant Promotes wound closure Encourages collagen formation

Correct Answer:

Promotes wound closure

Explanation:

Vitamin A supports wound healing by promoting epithelialization—the growth and migration of skin cells to cover the wound surface. When epithelial cells can proliferate and move across the wound bed, the wound closes and the barrier is restored. This direct effect on re-epithelialization makes wound closure the most recognizable outcome of adequate vitamin A during healing. While vitamin A also helps regulate inflammation and can influence remodeling, its key impact in this context is speeding closure through epithelialization rather than primarily acting as an antioxidant or driving collagen formation.

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