A finger-like projection, or fold, known as the dermal papilla (plural = dermal papillae) is found in the superficial portion of the dermis. Dermal papillae increase the strength of the connection between the epidermis and dermis; the greater the folding, the stronger the …

2023年10月30日 · The papillary layer forms irregular projections known as the dermal papillae. They interlace with the epidermal ridges and contain small vessels organized in subpapillary vascular plexus . The papillae are less abundant and smaller in thin skin that has minimal mechanical stress, when compared to in areas of thicker skin (i.e., palms and soles ...

2012年6月1日 · Complex networks of finger-like protrusions characterize the dermal–epidermal junction of human skin. Although formed during the foetal development, such dermal papillae evolve in adulthood, often in response to a pathological condition. The aim of this work is to investigate the emergence of biaxial papillary networks in skin from a ...

In native skin, the DEJ is not flat but rather is defined by the architecture of the dermal papillae. This interdigitated topography significantly increases the surface area between the dermis and the epidermis, which enhances the resistance to mechanical shearing and promotes dermal–epidermal adhesion, resulting in increased structural and ...

A pattern of ridges and grooves on the deep surface of the epidermis fit a complementary pattern of corrugations of the underlying dermis. The projections of the dermis are called dermal papillae and those of the epidermis, epidermal ridges (pegs), because of their appearance in vertical sections of the skin.

3 天之前 · The skin, the body’s largest organ, has a heterogeneous structure with various cell types and tissue layers. ... stratum basale (marked by arrows), DP: dermal papilla. The white rectangular in ...

2025年1月31日 · Two major regions make up the dermis: the papillary layer (stratum papillarosum) and the reticular layer (stratum reticulosum). The papillary layer is the most superficial layer of the dermis; it contacts the epidermis. Between the epidermis and dermis it forms an undulating border that is rich in blood vessels and nervous tissue.

2017年12月8日 · In this study, the three-dimensional microstructure of dermal papillae is modeled, and the differences between two-dimensional and three-dimensional aspects of dermal papillae on the strain energy density at receptor positions are examined.

The papillary layer is named after its plethora of finger-like projections, known as dermal papillae (singular = dermal papilla). Dermal papillae also protrude and project into the stratum basale of the epidermis, causing a wave-like border between the epidermal stratum basale and the dermis.

A skin model with dermal papilla-like structures was created by referring to the optical and shape properties of the skin using agar gel and a scattering sheet. Results: Correlations were found between the dermal papillary structures and skin color irregularity and skin elasticity.