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  2. Skin immunity - Wikipedia

    en.wikipedia.org/wiki/Skin_immunity

    Skin immunity is a property of skin that allows it to resist infections from pathogens. In addition to providing a passive physical barrier against infection, the skin also contains elements of the innate and adaptive immune systems which allows it to actively fight infections. Hence the skin provides defense in depth against infection.

  3. Human skin - Wikipedia

    en.wikipedia.org/wiki/Human_skin

    Skin plays an important immunity role in protecting the body against pathogens and excessive water loss. Its other functions are insulation, temperature regulation, sensation, synthesis of vitamin D, and the protection of vitamin B folates. Severely damaged skin will try to heal by forming scar tissue. This is often discoloured and depigmented.

  4. Acid mantle - Wikipedia

    en.wikipedia.org/wiki/Acid_mantle

    The acid mantle is a very thin, delicate, slightly acidic film covering the entire surface of human skin, serving as a protective barrier against pathogens and reduces body odor. [ 1 ] [ 2 ] The acidic pH at the skin's surface mainly maintained by free amino acids and α-hydroxy acids ( lactic acids ) excreted from sweat ; free fatty acids and ...

  5. Integumentary system - Wikipedia

    en.wikipedia.org/wiki/Integumentary_system

    The integumentary system includes skin, hair, scales, feathers, hooves, claws, and nails. It has a variety of additional functions: it may serve to maintain water balance, protect the deeper tissues, excrete wastes, and regulate body temperature, and is the attachment site for sensory receptors which detect pain, sensation, pressure, and ...

  6. Stratum corneum - Wikipedia

    en.wikipedia.org/wiki/Stratum_corneum

    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. The stratum compactum is the comparatively deeper, more compacted and more cohesive part of the stratum corneum. [ 6 ]

  7. 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 .

  8. Keratinocyte - Wikipedia

    en.wikipedia.org/wiki/Keratinocyte

    A number of structural proteins (filaggrin, keratin), enzymes (e.g. proteases), lipids, and antimicrobial peptides contribute to maintain the important barrier function of the skin. Keratinization is part of the physical barrier formation ( cornification ), in which the keratinocytes produce more and more keratin and undergo terminal ...

  9. Skin flora - Wikipedia

    en.wikipedia.org/wiki/Skin_flora

    Skin flora, also called skin microbiota, refers to microbiota (communities of microorganisms) that reside on the skin, typically human skin. Many of them are bacteria of which there are around 1,000 species upon human skin from nineteen phyla. [1] [2] Most are found in the superficial layers of the epidermis and the upper parts of hair follicles.

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