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  2. Human skin - Wikipedia

    en.wikipedia.org/wiki/Human_skin

    The human skin is the outer covering of the body and is the largest organ of the integumentary system. The skin has up to seven layers of ectodermal tissue guarding muscles, bones, ligaments and internal organs. Human skin is similar to most of the other mammals' skin, and it is very similar to pig skin.

  3. Epidermis - Wikipedia

    en.wikipedia.org/wiki/Epidermis

    Schematic image showing a section of epidermis, with epidermal layers labeled. The epidermis is composed of 4 or 5 layers, depending on the region of skin being considered. [10] Those layers from outermost to innermost are: [2] cornified layer (stratum corneum)

  4. Integumentary system - Wikipedia

    en.wikipedia.org/wiki/Integumentary_system

    The reticular layer is the deep layer of the dermis and consists of the dense irregular connective tissue. These layers serve to give elasticity to the integument, allowing stretching and conferring flexibility, while also resisting distortions, wrinkling, and sagging. [3] The dermal layer provides a site for the endings of blood vessels and ...

  5. Stratified squamous epithelium - Wikipedia

    en.wikipedia.org/wiki/Stratified_squamous_epithelium

    It forms the outermost layer of the skin and the inner lining of the mouth, esophagus and vagina. [2] In the epidermis of skin in mammals, reptiles, and birds, the layer of keratin in the outer layer of the stratified squamous epithelial surface is named the stratum corneum. Stratum corneum is made up of squamous cells which are keratinized and ...

  6. Skin - Wikipedia

    en.wikipedia.org/wiki/Skin

    Skin is the layer of usually soft, flexible outer tissue covering the body of a vertebrate animal, with three main functions: protection, regulation, and sensation. Other animal coverings , such as the arthropod exoskeleton , have different developmental origin , structure and chemical composition .

  7. Dermis - Wikipedia

    en.wikipedia.org/wiki/Dermis

    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 ...

  8. Stratum corneum - Wikipedia

    en.wikipedia.org/wiki/Stratum_corneum

    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.

  9. Subcutaneous tissue - Wikipedia

    en.wikipedia.org/wiki/Subcutaneous_tissue

    The subcutaneous tissue (from Latin subcutaneous 'beneath the skin'), also called the hypodermis, hypoderm (from Greek 'beneath the skin'), subcutis, or superficial fascia, [2] is the lowermost layer of the integumentary system in vertebrates. [3] The types of cells found in the layer are fibroblasts, adipose cells, and macrophages.

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