Certified Wound Ostomy Nurse (CWON) Practice Test

What structural feature is formed as part of the rete ridges during wound healing?

1. Collagen fibers align to provide strength

2. Fluid accumulates to separate layers

3. New blood vessels sprout

4. New epithelial cells interdigitate at the dermal-epidermal junction

The correct answer is: New epithelial cells interdigitate at the dermal-epidermal junction

The correct answer highlights the formation of new epithelial cells interdigitating at the dermal-epidermal junction, which is a critical aspect of wound healing. Rete ridges are projections of the epidermis that extend into the dermis and play a key role in the structural integrity and functionality of the skin. These interdigitations increase the surface area between the dermis and epidermis, which aids in adhesion and supports the transfer of nutrients and waste. During the healing process, as epithelial cells migrate to cover the wound, they proliferate and extend into the dermal layer, creating these interdigitated patterns. This is essential for restoring the barrier function of the skin, as it helps to re-establish the epidermal structure that has been disrupted by injury. Additionally, the presence of these rete ridges contributes to the overall strength and resilience of the skin after healing. The formation of rete ridges is crucial for normal skin morphology and function, as they provide a mechanical interlocking pattern that helps to prevent separation between the two layers of skin.