Wound Treatment Associate (WTA) Practice Exam

How does a partial-thickness wound primarily heal?

1. Through granulation and contraction

2. By resurfacing with new epithelial cells

3. With the formation of scar tissue

4. With extensive exudate formation

The correct answer is: By resurfacing with new epithelial cells

A partial-thickness wound primarily heals by resurfacing with new epithelial cells. This healing process involves the regeneration of the epidermis, which includes the migration and proliferation of keratinocytes from the wound edges and the remaining dermal tissues. In partial-thickness wounds, the damage extends through the epidermis and into the upper layers of the dermis but does not penetrate deeper into the subcutaneous layers. This type of wound has an inherent ability to heal without significant scarring, primarily because the dermal structures are still intact, allowing for the regeneration of skin. The epithelial cells can migrate across the wound bed and reestablish a barrier, which is crucial for protecting underlying tissues and preventing infection. The other options, while related to wound healing processes, do not accurately describe the primary method of healing for partial-thickness wounds. Granulation and contraction are more characteristic of full-thickness wounds, where deeper tissue remodeling occurs. The formation of scar tissue is typically associated with full-thickness wounds due to the deeper damage and subsequent inflammatory response. Extensive exudate formation may occur in various types of wounds, but it does not define the primary healing method for partial-thickness wounds. Thus, resurfacing with epithelial cells is critical in achieving closure and proper