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  2. Hair follicle - Wikipedia

    en.wikipedia.org/wiki/Hair_follicle

    A hair follicle consists of : The papilla is a large structure at the base of the hair follicle. [4] The papilla is made up mainly of connective tissue and a capillary loop. Cell division in the papilla is either rare or non-existent. [contradictory] Around the papilla is the hair matrix. A root sheath composed of an external and internal root ...

  3. Pili multigemini - Wikipedia

    en.wikipedia.org/wiki/Pili_multigemini

    Pili multigemini, also known as "compound hairs," [2] is a malformation characterized by the presence of bifurcated or multiple divided hair matrices and papillae, giving rise to the formation of multiple hair shafts within the individual follicles. [3] [4]

  4. Hair analysis - Wikipedia

    en.wikipedia.org/wiki/Hair_analysis

    Microscopic hair analysis has traditionally been used in forensics as well. Analysts examine a number of different characteristics of hairs under a microscope, usually comparing hair taken from a crime scene and hair taken from a suspect. It is still acknowledged as a useful technique for confirming that hairs do not match.

  5. Arrector pili muscle - Wikipedia

    en.wikipedia.org/wiki/Arrector_pili_muscle

    The arrector pili muscles, also known as hair erector muscles, [1] are small muscles attached to hair follicles in mammals. Contraction of these muscles causes the hairs to stand on end, [ 2 ] known colloquially as goose bumps (piloerection).

  6. 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 ...

  7. Skin appendage - Wikipedia

    en.wikipedia.org/wiki/Skin_appendage

    In humans, some of the more common skin appendages are hairs (sensation, heat loss, filter for breathing, protection), arrector pilli (smooth muscles that pull hairs straight), sebaceous glands (secrete sebum onto hair follicle, which oils the hair), sweat glands (can secrete sweat with strong odour or with a faint odour (merocrine or eccrine ...

  8. Cuticle (hair) - Wikipedia

    en.wikipedia.org/wiki/Cuticle_(hair)

    The hair cuticle is also known to contain anteiso-18-methyleicosanoic acid which contribute to the hydrophobic properties of hair. [5] [4] Diagram of the hair shaft, indicating medulla (innermost), cortex, and cuticle (exterior) While the cuticle is the outermost layer, it is not responsible for the color of the hair.

  9. Monilethrix - Wikipedia

    en.wikipedia.org/wiki/Monilethrix

    Monilethrix (also referred to as beaded hair) [1] is a rare autosomal dominant hair disease that results in short, fragile, broken hair that appears beaded. [2] [3] It comes from the Latin word for necklace (monile) and the Greek word for hair (thrix). [4] Hair becomes brittle, and breaks off at the thinner parts between the beads.