Milk, its nature and composition : a handbook on the chemistry and bacteriology of milk, butter, and cheese / by C.M. Aikman.

Date:
1899
Catalogue details

Licence: Public Domain Mark

Credit: Milk, its nature and composition : a handbook on the chemistry and bacteriology of milk, butter, and cheese / by C.M. Aikman. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    smallest of the ductlets are clustered several alveoli. Of these milk-cisteriis there are four, one above each teat. They thus act, as their name indicates, as cisterns for supplying the teats with milk. The alveoli or pouches above mentioned are sur- rounded by a structureless membrane (tunica ■propria), the internal surface of which is thickly covered with Fig. 3.—Half Diagrammatio View of a Section thkooqh a Lobole of THE Mammary Gland (after Klein, Atlas of Histology, Plate 40, Fig. 1). Magnified 45 diameters, a, A duct dividing into two branches; b, b, b, connective tissue surrounding and going between the ultimate pouches of tlie gland ; c, c, c, tlie pouches or alveoli of tlie gland, the dots representing tlie cells lining them, epithelial cells (see Figs. 5 and 6). The mem- brane is further covered'with a system of capillary blood-vessels (see Fig. 7), which brings the blood near the cells, and thus nourishes them. Each alveolus possesses a minute cavity in its centre (see Fig. 4), in which the cells or their products can accumulate. When milk is not being formed
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