. Elements of histology. Histology. Chap. XXXIV.] The Skin. 281 fibrous layer of the hair-sac a single continuous layer of transversely or circularly-arranged spindle- shaped cells, each with an oval flattened or staff- shaped nucleus, completely resembling, and generally considered to be, non-striped mns- l cle cells. Inside of this layer of the hair-sac is a glassy-looking, hyaline, basement membrane, which | is not very <hs- «~-»r||-Wgrg]5| tmct m minute \\wk&x\$TXV'- hairs, but is sufh- ciently conspicu- ous in large adult hair - follicles. This glassy mem- brane, as it is calle
. Elements of histology. Histology. Chap. XXXIV.] The Skin. 281 fibrous layer of the hair-sac a single continuous layer of transversely or circularly-arranged spindle- shaped cells, each with an oval flattened or staff- shaped nucleus, completely resembling, and generally considered to be, non-striped mns- l cle cells. Inside of this layer of the hair-sac is a glassy-looking, hyaline, basement membrane, which | is not very <hs- «~-»r||-Wgrg]5| tmct m minute \\wk&x\$TXV'- hairs, but is sufh- ciently conspicu- ous in large adult hair - follicles. This glassy mem- brane, as it is called, is a direct continuation of the basement. Fig. 148. -Cross Section through a Human Hair and Hair Follicle. a, Marrow of hair; 6, cortex of hair; c, cuticle of hair; d, Huxley's layer of inner root-sheath; e, Henle's layer of inner root-shcath; /, outer root- sheath ; g, glassy membrane ; h, fibrous coat of hair sac; i, lymph spaces in the same. membrane of the surface of the corium, and it can be traced as a delicate membrane also over the surface of the hair-papilla. 381. Next to the glassy membrane is the outer root-sheath, the most conspicuous part of the hair-fol- licle. It consists of a thick stratified epithelium of exactly the same nature as the stratum Malpighii of the epidermis, with which it is directly continuous, and from which it is developed. In the outer root- sheath the layer of cells next to the glassy membrane is columnar, just like the deepest layer of cells in the stratum Malpighii; then follow inwards several layers of polyhedral cells; and, finally, flattened nucleated scales form the innermost boundary of the outer root-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Klein, E. (Edward), 1844-1925. Philadelphia : H. C. Lea's Son
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