Which layer of skin is located beneath the epidermis?

The dermis is the layer of skin that lies directly beneath the epidermis, making it essential for the structural integrity and functionality of the skin. The dermis is composed of connective tissue, blood vessels, nerve endings, hair follicles, and other important structures that support the epidermis and play a critical role in thermoregulation and sensation.

This layer contains two main components: the papillary dermis, which is the uppermost region composed of thin connective tissue and houses capillaries and sensory neurons, and the reticular dermis, which is thicker and contains dense irregular connective tissue providing strength and elasticity. The blood vessels in the dermis also supply nutrients to the avascular epidermis above it, underlining the dermis's vital role in skin health and function.

In contrast, the epidermis is the outermost layer of skin and primarily serves as a protective barrier. The subcutaneous layer, although important for insulation and cushioning, is located beneath the dermis. The stratum corneum is actually a part of the epidermis, specifically the outermost layer that consists of dead skin cells that provide an additional layer of protection.