File:Quain's elements of anatomy (1882) (14576721649).jpg

Identifier: quainselementsofquai02 (find matches)
Title: Quain's elements of anatomy
Year: 1882 (1880s)
Authors: Quain, Jones, 1796-1865 Thomson, Allen, 1809-1884 Sharpey-Schäfer, E. A. (Edward Albert), Sir, 1850-1935, ed Thane, George Dancer, 1850-1930
Subjects: Human anatomy Anatomy
Publisher: New York : William Wood and co.
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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on the innerside of the limbs, and as well as the cuticle, it is remarkably thick onthe soles of the feet and palms of the hands. The skin of the female isthinner than that of the male. The skin is generally said to measure from -^^i^th. of an inch to nearly ^th of an.inch. (5 to 3 millimeters) ; but it has been pointed out hj Warren that, on the backand shoulders, it may be as thick as o or 6 mm. ; and here it is almost entirelyformed of dense anastomosing bundles of connective tissue ; sending down on theone hand fibrous prolongations through the subjacent panniculus adiposus, andbeing penetrated obliquely on the other hand by columns of fat cells, whichextend from that layer to the bases of the small hair-follicles, and conduct blood-vessels to these and to the surface of the skin. Bundles of plain muscular tissue are distributed in the substance ofthe coriuni wherever hairs occur ; their connection with the latterwill be afterwards explained. Muscular bundles of the same kind are
Text Appearing After Image:
-? --a ■-_-—--<? i.-r/ Pig. 221. —Vertical section op the skin and subcutaneous tissue, from the end of THE thumb, across THE RIDGES AND FURROWS. MAGNIFIED 20 DIAMETERS (Kolliker). a, horny, and 6, Malpighian layer of the epidermis ; c, corium ; d, 2Mnniculus adiposus ;e, papillaj on the ridges ; /, fat-clusters ; y, sweat-glands ; h, sweat-ducts ; i, their open-ings on the surface. found in the subcutaneous tissue of the scrotum, penis, perineum, andareola of the nipple, as well as in the nipple itself. They join to formreticular layers, attached to the under smiace of the corium. In theareola they are disposed circularly. Por convenience of description it is not unusual to speak of the PAPILLAE OF THE CORIUM. 241 coriiim a:? consisfciug of two layers, the reticular and the papillary.The former, the more deeply seated, takes no part in the construction ofthe jDapiUffi, but contains in its meshes hair foUicles, cutaneous glands,and fat. The latter is extended into papiUee, an

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