Oregon Esthetician State Board

What does the papillary layer connect?

1. The dermis to the epidermis

2. The epidermis to the stratum corneum

3. The subcutaneous layer to the epidermis

4. The muscle layer to the dermis

The correct answer is: The dermis to the epidermis

The papillary layer plays a crucial role in the structure of the skin, specifically by connecting the dermis to the epidermis. This layer is the uppermost part of the dermis and contains thin, loosely arranged collagen fibers, which create a strong bond with the epidermis above it. The papillary layer also contains dermal papillae, small, nipple-like projections that interdigitate with the epidermis, enhancing the surface area for the exchange of nutrients and waste products between these two layers. This connection is vital for maintaining skin health, providing necessary support, and facilitating the delivery of oxygen and nutrients to the epidermal cells, which are avascular (lacking blood vessels). In contrast, other options do not accurately describe the papillary layer's function. For instance, the connection between the epidermis and stratum corneum is inherently part of the epidermis itself, while the subcutaneous layer is primarily involved in insulation and fat storage rather than connecting directly to the epidermis. The muscle layer is located deeper in the skin structure and does not connect in the same manner as the dermis and epidermis through the papillary layer. Hence, the correct choice reflects the essential anatomical relationship that underpins skin structure and function.