What is stratum papillarosum?

Stratum papillarosum, also known as the papillary layer of the dermis, is the uppermost layer of the dermis in the skin. It consists of loose connective tissue and contains blood vessels, lymphatics, and sensory neurons, which provide nutrients to the epidermis and support its structure. This layer is characterized by dermal papillae, which project into the epidermis, enhancing the connection between the two layers and contributing to skin texture and sensitivity.