Page 483 - Atlas of Histology with Functional Correlations

SECTION 2 Thick Skin

The basic histology of skin is similar in different regions of the body, except in

the thickness of the epidermis. Palms and soles are constantly exposed to
increased wear, tear, and abrasion. As a protective measure, the epidermis in
these regions is thick, especially the outermost stratified keratinized layer (Fig.
12.6). Because of the increased thickness of the epidermis, the skin on the palms
and soles is called thick skin. Thick skin also contains numerous sweat glands,

but it lacks hair follicles, sebaceous glands, and smooth muscle fibers.

FIGURE 12.6 ■ Contents of the connective tissue dermis of the thick skin of the

palm.

Supplemental micrographic images are available at
www.thePoint.com/Eroschenko13e under Skin System.

FIGURE 12.7 | Thick Skin: Epidermis, Dermis,

and Hypodermis of Palm

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