Root sheath

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Root sheath
Gray945.png
Transverse section of hair follicle.
Identifiers
Gray's p.1068
Dorlands
/Elsevier
s_10/12733034
Anatomical terminology

The inner or epidermic coat of the hair follicle is closely adherent to the root of the hair, and consists of two strata named respectively the outer and inner root sheaths;

Outer Root Sheath[edit]

The outer root sheath corresponds with the stratum mucosum (Stratum germinativum and Stratum Spinosum)[1] of the epidermis, and resembles it in the rounded form and soft character of its cells; at the bottom of the hair follicle these cells become continuous with those of the root of the hair.

Inner Root Sheath[edit]

The inner root sheath consists of

  • (1) a delicate cuticle next the hair, composed of a single layer of imbricated scales with atrophied nuclei;
  • (2) Huxley's layer
  • (3) Henle's layer

The term "trichilemmal" refers to the outer root sheath.[2]

References[edit]

  1. ^ The Common Integument - Gray's Anatomy of the Human Body - Yahoo! Education
  2. ^ trichilemmal: Definition and Much More from Answers.com

External links[edit]