Hair Follicle

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Transverse section of a hair and hair follicle made below the opening of the sebaceous gland. Labels: a, medulla or pith of the hair; b, fibrous layer or cortex; c, cuticle; d, Huxley’s layer; e, Henle’s layer of internal root sheath; f and g, layers of external root sheath, outside of g is a light layer, or “glassy membrane” which is equivalent to the basement membrane; h, fibrous coat of hair sac; i, vessels.


Baker, W. Morrant & Harris, Vincent Dormer Kirkes' Hand-book of Physiology, 13th ed. (Philadelphia: P. Blakiston's Son & Co., 1892) 450


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