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Title Skin (Layers, Glands, Vessels) Description The layers of skin (epidermis, dermis, and fatty tissue) and associated glands and vessels (blood vessels, follicle, oil gland, sweat gland, and melanocytes). Topics/Categories Anatomy -- Skin Type B&W, Medical Illustration Source National Cancer Institute
The dermis is composed of three major types of cells: [3] fibroblasts, macrophages, and mast cells.. Apart from these cells, the dermis is also composed of matrix components such as collagen (which provides strength), elastin (which provides elasticity), and extrafibrillar matrix, an extracellular gel-like substance primarily composed of glycosaminoglycans (most notably hyaluronan ...
Genetically modified pigs can produce allograft-equivalent skin material, [6] and tilapia skin is used as an experimental cheap xenograft in places where porcine skin is unavailable and in veterinary medicine. [7] [8] By thickness: Split-thickness A split-thickness skin graft (STSG) includes the epidermis and part of the dermis. Its thickness ...
FTSGs are the most frequently used grafts in dermatology, [14] which involves surgical removal of the epidermis and dermis layers of the skin. After the skin graft is harvested, the donor site is stitched close, and the graft is trimmed of any underlying hair or fat tissue, as well as contoured to match the size and shape of the defect. [15]
Split-thickness skin grafts (the epidermis and part of the dermis) Full-thickness skin grafts (the epidermis and the entire thickness of the dermis) Bone grafting – used in dental implants, as well as other instances. The bone may be autologous, typically harvested from the iliac crest of the pelvis, or banked bone/allograft. [2]
The dermis has two layers: the papillary dermis and the reticular layer. The papillary layer is the superficial layer that forms finger-like projections into the epidermis (dermal papillae), [5] and consists of highly vascularized, loose connective tissue. The reticular layer is the deep layer of the dermis and consists of the dense irregular ...
The dermal equivalent, or neodermis layer, is not removed as it is suitable for growth of cells and vessels. [7] The two layer process, however, may potentially lead to an infection due to any unwanted accumulation between the layers. [3] The main and primary use of Integra was for burn victims who required skin grafts. [2] [7]
The human stratum corneum comprises several levels of flattened corneocytes that are divided into two layers: the stratum disjunctum and stratum compactum. The skin's protective acid mantle and lipid barrier sit on top of the stratum disjunctum. [5] The stratum disjunctum is the uppermost and loosest layer of skin.
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