What are dermal papillae?

Human skin consists of several layers and the farthest layer is called an epidermis, which sits directly on the upper part of another layer called dermis. Dermal papillae, sometimes called dermal pins or DP, are small protrusions of the dermis layer into the epidermis layer. The dermal papillae serves several functions, including strengthening the adhesive link between the dermis and the epidermis, reducing the risk of separation between the two layers of the skin and providing blood flow to the epidermis that does not have its own blood supply. The nerves passing through the Dermis into the epidermis through dermal papillas also serve the function of providing important sensory information and these nerves are particularly sensitive to pressure, pain, cold and heat. On the hands and legs, the formula of dermal papillas is visible in the form of fingerprints, also known as epidermal or papillary ridges.Al papilla. In its shape, papilla looks like a finger or nipple, and the word is derived from the Latin word papula, which means a pimple. Part of the dermis where they are located dermalThe papilla is also called papillary dermis or papillary layer. Approximately 20% of the dermis consists of this papillary layer, which consists mainly of elastic connective tissue, blood vessels, touch receptors and nerve endings.

dermal papillae are an important part of skin anatomy. They contain vascular loops and capillaries that transport oxygen and nutrients from the blood system to the epidermis and at the same time remove waste products from the epidermal layer. The epidermis works mainly as a protective, outer layer and does not have its own nerve cells, but dermal papillas have specialized nerve endings that are very sensitive and provide a vital sensory entrance to Stratum of Skin.

dermal papillae are important in creating hair follicles and are involved in a cycle of hair growth and release. The hair follicle is an indentation in an epidermis sitting directly at the top of the dermal papilla.In the case of hair follicle, dermal papilla is surrounded by what is called hair matrix, which consists of epithelial cells, and pigment -producing cells that help to form the hair itself, as well as root cloaks. Access to the capillary blood vessel in dermal papille is vital for hair formation and growth.