A reference handbook of the medical sciences, embracing the entire range of scientific and practical medicine and allied science . ller ones. De Sin6ty has pointed out that city-bred womenare Ukely to have breasts much more poorly developedand functionally less active than their country he attributes to the social conditions in the city leading so often to the wet-nurse and bottle, and hebelieves that this, carried through several generations,has led to an inherited characteristic. Thus thebreast is following the law of morphology, that thoseorgans which have become functionless a
A reference handbook of the medical sciences, embracing the entire range of scientific and practical medicine and allied science . ller ones. De Sin6ty has pointed out that city-bred womenare Ukely to have breasts much more poorly developedand functionally less active than their country he attributes to the social conditions in the city leading so often to the wet-nurse and bottle, and hebelieves that this, carried through several generations,has led to an inherited characteristic. Thus thebreast is following the law of morphology, that thoseorgans which have become functionless and uselessgradually are less and less developed and finallydisappear. Structure.—The breasts are composed essen-tially of three parts: first, the mammae proper;second, the covering skin; third, the surroundingfatty tissue. The mamma?, like all glands, consist of two parts:the parenchyma, and the stroma. The latter in-cludes the fat, which is embedded in it, also theblood-vessels, lymphatics, and nerves, which ramifytlirough it. —The parenchyma is divided into acentral compact part, the body or corpus mammae,. ^mM^ Fig. 1097.—Dissection of the Lower Half of the Female Mammaduring the Period of Lactation. (Luschka.) a, a, a, Undissectedpart of the mamma; 1, the mammilla; 2, areola; 3, subcutaneousmasses of fat: 5, three lactiferous ducts passing toward the mam-milla where they open; 6, one of the sinuses or ampullje: 7, someof the glandular lobules which have been unravelled; 7, othersmassed together. (Quain.) surrounded by peripheral processes. It is made upof lobes (lobi mamms) divided into lobules (lobulimammae). All of the lobules of a lobe empty bysmall ducts into larger ones. These ultimately leadto one large lactiferous duct, which opens upon thenipple (Figs. 1096 and 1097). When the covering parts are removed, the glandpresents a flattened mass with an irregular, circularoutline, thicker in the center than at the ventral surface is convex
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Keywords: ., bookauthorbuckalbe, bookcentury1900, bookdecade1910, bookyear1913
