5 26 



STRUCTURE OF THE SKIN. 



of a dense, uniformly woven network of elastic fibers, more delicate in the papillae, 

 and coarser in the deeper layers, with which fibrillary connective tissue, with 

 connective-tissue corpuscles and lymphoid cells, are intermixed. In the deepest 

 layers, the connective tissue predominates, and, by the interlacing of its bundles, 

 forms longitudinal-rhombic reticular spaces (a a), generally filled with fatty tissue, 

 whose longitudinal expansion corresponds with that of the greatest degree of 



FIG. 178. Histology of the Skin and the Epidermoidal Structures: I, transverse section through the skin, with 

 hair and sebaceous glands (T), corium and epidermis are shown in reduced size; i, external, 2, internal fibrous 

 layer of the hair-follicle; 3, cuticula of the hair-follicle; 4, external root-sheath; 5, Henle's layer of the inner 

 root-sheath; 6, Huxley's layer of the inner root-sheath; p, hair-root attached to the vascular hair-papilla; 

 A, arrector pili muscle; C, corium; a, subcutaneous fatty tissue; b, horny layer; d, Malpighian mucous 

 layer of the epidermis; g, vessels of the cutaneous papillae; v, lymphatics of the cutaneous papillae; h, horny 

 substance; i, medullary canal; k, epidermis of the hair; K, sudoriferous gland; E, epidermal scales from 

 the horny layer, viewed partly from the side, partly from the surface; R, prickle-cells from the Malpighian 

 layer; n, superficial, deep nail-cells; H, hair, more highly magnified; e, epidermis; c, medullary canal with 

 medullary cells; f f, fiber cells of the hair-substance; x, cells of Huxley's layer; i, cells of Henle's layer; S, 

 transverse section through a sudoriferous gland of the axillary cavity; a, adjacent unstriated muscular fibers; 

 t, cells of a sebaceous gland, in part with fatty contents. 



tension of the skin at the part of the body in question. Beneath the corium 

 lies the subcutaneous connective tissue, which, however, is without fat-cells in 

 some places. At certain points, firm fibrous bands of connective tissue unite the 

 skin to the underlying fascia, ligaments, or bones (tenacula cutis). In other 

 situations, principally over projecting bony parts, there are subcutaneous mucous 

 bursae filled with a synovial-like fluid, their interior partly lined by endothelium. 



