Nahapiirkonnal

Nahapiirkonnal is Estonian for the dermal region of the skin, referring to the layer located between the epidermis and the subcutaneous tissue. In anatomical terms, the nahapiirkonnal comprises two sublayers: the papillary dermis, which forms a connection with the epidermis, and the deeper reticular dermis. The dermis is mainly connective tissue rich in collagen and elastin fibers, along with fibroblasts, immune cells, blood vessels, and a network of nerves. It also contains skin appendages such as hair follicles, sebaceous glands, and sweat glands.

Functions of the nahapiirkonnal include providing mechanical support and skin strength, supplying elasticity, and facilitating thermoregulation through its vascular network. It is also a key site for sensation, housing receptors and nerve endings that detect touch, pressure, and temperature. The dermis plays a central role in wound healing, as fibroblasts migrate into the damaged area and synthesize collagen and other matrix components to restore tissue integrity.

Clinical relevance varies with age, sun exposure, and injury. Aging and ultraviolet radiation can reduce collagen and elastin, leading to wrinkles and diminished skin resilience. Dermal injuries trigger inflammatory and reparative processes within the nahapiirkonnal. Treatments that aim to restore volume or texture, such as dermal fillers, act within this layer to influence appearance and function.

In summary, nahapiirkonnal denotes the skin’s dermal region, a structurally and functionally vital layer supporting form, sensation, and tissue repair.