476 



THE HUMAN BODY 



Wherever there are hairs, bundles of smooth muscular tissue are 

 found in the corium; it contains also a close capillary network 

 and numerous lymphatics and nerves. In shaving, so long as the 

 razor keeps in the epidermis there is no bleeding; but a deeper cut 

 shows at once the vascularity of the true skin. 



The outer surface of the corium is almost everywhere raised into 

 minute elevations, called the papilla, on which the epidermis is 



a 



.A 



-771 



d 



SC 



FIG. 142. A section through the skin and subcutaneous aerolar tissue, h, 

 horny stratum, and m, deeper more opaque layer of the epidermis; d, dermis 

 passing below into sc, loose areolar tissue, with fat, /, in its meshes ; above, dermic 

 papilla} are seen, projecting into the epidermis which is molded on them, a, 

 opening of a sweat-gland; gl, the gland itself. 



molded, so that its deep side presents pits corresponding to the 

 projections of the dermis. In Fig. 141 is shown a papilla of the 

 corium containing a knot of blood-vessels, supplied by the small 

 artery, /, and having the blood carried off from them by the two 

 little veins, g g. Other papillae contain no capillary loops but 

 special organs connected with nerve-fibers, and supposed to be 

 concerned in the cutaneous senses (Chap. XIII). On the pal- 

 mar surface of the hand the dermic papillae are especially well de- 



