Inner root sheath
Region of hair follicle
The inner root sheath or internal root sheath of the hair follicle is located between the outer root sheath and the hair shaft. It is made of three layers: Henle's layer, Huxley's layer, and the cuticle. The inner root sheath serves to protect growing hair.
01Description
Henle's layer is the outermost layer of the inner root sheath, consisting of a single row of cubical cells. During his original examination, Henle believed the layer lacked nuclei because he viewed it at a level where it had already cornified. Huxley's layer is in the middle, made up of approximately two rows of flattened cells with granular protoplasm. The cuticle of the root sheath is in the center, continuous with the outermost layer of the hair fiber.
Sources and credits
This article is adapted from the Wikipedia article “Inner root sheath”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
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