flexure lines
Flexure lines
The deeper part of the dermis is responsible for markings on our skin surface called Flexure lines. These lines are easily observed as the deep skin creases on the palms. Flexure lines result from a continual folding of the skin, often over joints, where the dermis attaches tightly to underlying structures. Flexure lines are also visible on the wrists, soles of the feet, fingers, and toes.
Dermis-- The deeper portion or layer of the skin beneath the epidermis.
dermis
Hairs are structures are formed by portions of the epidermis that extend into the dermis and are adjacent to dermal papillae.
There is no structural similarity between the epidermis and the dermis. They are both a part of the integumentary system but are vastly different in structure and makeup.
The Clark Level, or the measure of tumor depth in the skin, of the reticular dermis is level VI. This is deeper than the papillary dermis, but not the depest a tumor can go.
The dermis contains nerves, blood vessels, sweat glands, hairs, and oil glands.
The dermis contains many nerves and blood vessels, while the epidermis does not. The dermis is so close to the epidermis that even shallow cuts may hurt.
Pores
The dermal tissue structures responsible for fingerprints are dermal papillae. They are tiny extensions of the dermis into the epidermis.
Cellulitis is not contagious because it is an infection of the skin's deeper layers, the dermis and subcutaneous tissue.