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  2. Hair follicle - Wikipedia

    en.wikipedia.org/wiki/Hair_follicle

    The hair follicle is an organ found in mammalian skin. [ 1 ] It resides in the dermal layer of the skin and is made up of 20 different cell types, each with distinct functions. The hair follicle regulates hair growth via a complex interaction between hormones, neuropeptides, and immune cells. [ 1 ] This complex interaction induces the hair ...

  3. Hair keratin - Wikipedia

    en.wikipedia.org/wiki/Hair_keratin

    The base of the hair follicle contains the bulb, housing dermal fibroblasts known as the dermal papilla, crucial for morphogenesis and the hair follicle's cyclic activity. Encircling these cells is the matrix cell region, the hair follicle's proliferative compartment, responsible for the formation of different follicle compartments (except the ...

  4. 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 ...

  5. Hair matrix - Wikipedia

    en.wikipedia.org/wiki/Hair_matrix

    The hair matrix, or simply matrix, produces the actual hair shaft as well as the inner and outer root sheaths of hair. [1] References This page was last edited ...

  6. Sebaceous gland - Wikipedia

    en.wikipedia.org/wiki/Sebaceous_gland

    A sebaceous gland or oil gland[1] is a microscopic exocrine gland in the skin that opens into a hair follicle to secrete an oily or waxy matter, called sebum, which lubricates the hair and skin of mammals. [2] In humans, sebaceous glands occur in the greatest number on the face and scalp, but also on all parts of the skin except the palms of ...

  7. Keratinocyte - Wikipedia

    en.wikipedia.org/wiki/Keratinocyte

    Keratinocyte. Keratinocytes are the primary type of cell found in the epidermis, the outermost layer of the skin. In humans, they constitute 90% of epidermal skin cells. [1] Basal cells in the basal layer (stratum basale) of the skin are sometimes referred to as basal keratinocytes. [2] Keratinocytes form a barrier against environmental damage ...

  8. Stratum corneum - Wikipedia

    en.wikipedia.org/wiki/Stratum_corneum

    The cytoplasm of its cells shows filamentous keratin. These corneocytes are embedded in a lipid matrix composed of ceramides, cholesterol, and fatty acids. [3] Desquamation is the process of cell shedding from the surface of the stratum corneum, balancing proliferating keratinocytes that form in the stratum basale. These cells migrate through ...

  9. Keratin - Wikipedia

    en.wikipedia.org/wiki/Keratin

    Alpha-keratin (α-keratin) is a type of keratin found in vertebrates. It is the key structural material making up scales, hair, nails, feathers, horns, claws, hooves, and the outer layer of skin among vertebrates. Keratin also protects epithelial cells from damage or stress. Keratin is extremely insoluble in water and organic solvents.

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