Which layer of skin contains blood vessels and nerves?

The dermis is the layer of skin that contains blood vessels and nerves, playing a crucial role in the overall function and health of the skin. This layer sits beneath the epidermis and is much thicker, providing structural support and elasticity due to its collagen and elastin fiber content.

Blood vessels in the dermis are essential as they supply oxygen and nutrients to the skin cells while also aiding in the regulation of body temperature through the dilation and constriction of blood vessels. The presence of nerves in the dermis is equally important, as they serve as a means for the skin to communicate sensations such as touch, pain, and temperature to the brain.

In contrast, the stratum corneum, which is the outermost layer of the epidermis, is primarily made up of dead skin cells and does not contain blood vessels or nerves. The epidermis as a whole lacks these structures, relying on the dermis for nutrients and sensations. The subcutaneous tissue located beneath the dermis primarily contains fat and connective tissue, providing insulation and cushioning rather than a direct role in the sensing or blood supply to the skin itself.