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  1. www.kenhub.com › en › libraryHair shaft: function and histology | Kenhub

    Mar 17, 2024 · The hair shaft is the visible, nongrowing portion of a hair protruding from the skin. This part of the hair is not anchored to the hair follicle. The hair shaft has three layers: a central medulla, a keratinised cortex and an outer layer, known as the cuticle, which is highly keratinised and forms the thin hard cuticle on the outside of the hair.

    • Medical Content
    • 29 min

  2. www.nature.com › articles › s41580/021/00426-xCompression as a driver of hair loss | Nature Reviews ...

    Oct 8, 2021 · The hair shaft — the portion of a hair that extends beyond the skin surface — is an inert structure (composed mostly of dead, keratinized cells) and is generally not...

    • Paulina Strzyz
    • nrm@nature.com
    • 2021

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  4. www.sciencedirect.com › science › articleStructure and function of skin, hair and nails - ScienceDirect

    Jun 1, 2021 · The hair follicle is a complex epithelial structure ( Figure 4 ). It is surrounded by an outer hair root sheath, which helps protect the growing hair, and an inner hair root sheath, which follows the hair shaft up to the opening of the sebaceous gland.

    • Joey E. Lai-Cheong, John A. McGrath
    • 2009

  5. onlinelibrary.wiley.com › doi › 10The biology of human hair: A multidisciplinary review

    Sep 3, 2019 · Here, we review and synthesize historical and current research on hair to better understand the scientific basis and biological implications of hair microstructure and morphology.

    • Sandra L. Koch, Silvana R. Tridico, Bruno A. Bernard, Mark D. Shriver, Nina G. Jablonski
    • 2020

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  7. bio.libretexts.org › Bookshelves › Introductory_and13.17: Nails and Hair - Biology LibreTexts

    Hair is one of the defining characteristics of mammals. Its main component is keratin. A hair shaft consists of dead, keratin-filled cells that overlap each other like the shingles on a roof (see Figure below ). Like roof shingles, the overlapping cells help shed water from the hair.

  8. www.cell.com › current-biology › fulltextThe Hair Follicle as a Dynamic Miniorgan: Current Biology

    The hair shaft consists of terminally differentiated keratinocytes that are produced by the hair follicle. Hair follicle development takes place during fetal skin development and relies on tightly regulated ectodermal–mesodermal interactions.

  9. link.springer.com › referenceworkentry › 10Science and Technology of Hair Fibers - Springer

    Sep 7, 2023 · Each component is a complex structure with unique mechanical, biological, chemical, geometrical, and physical properties. The visible portion of the hair, known as the hair shaft, is a flexible thread of tough cornified epithelium, continually produced by the hair follicle.

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