A manual of human physiology, including histology and microscopical anatomy, with special reference to the requirements of practical medicine . Fig. 171. Acini of the mammary glandof a sheep during lactation—a, membrana propria; b,secretory epithelium. Changes during Secretion.—Partsch andHeidenhain found that the secretory cellsin the passive non-secreting gland (Fig. 172, I) were flat, polyhedral,and uni-nucleated, whilst the secreting cells (Fig. II) often con-. Fig. 172. I—Inactive acinus of the mamma. II—During the secretion of milk ; a, b, milk-globules ; c, d, ?, colostrum-corpuscles ;
A manual of human physiology, including histology and microscopical anatomy, with special reference to the requirements of practical medicine . Fig. 171. Acini of the mammary glandof a sheep during lactation—a, membrana propria; b,secretory epithelium. Changes during Secretion.—Partsch andHeidenhain found that the secretory cellsin the passive non-secreting gland (Fig. 172, I) were flat, polyhedral,and uni-nucleated, whilst the secreting cells (Fig. II) often con-. Fig. 172. I—Inactive acinus of the mamma. II—During the secretion of milk ; a, b, milk-globules ; c, d, ?, colostrum-corpuscles ; f, pale cells (bitch). tained several nuclei, were more albuminous, higher, and cylindricalin form. The edge of the cell directed towards the lumen of theacinus undergoes characteristic changes during secretion. Fattygranules are formed in this part of the cell, and are afterwards ex-truded. The decomposed portion of the cell is dissolved in the milk,and the fatty granules become free as milk-globules. (Fig. II, a). Ifnuclei are present in that part of the cell which is broken up, they alsopass into the milk and give rise to the presence of nuclein in thesecretion. Besides the milk-globules and colostrum-corpuscles, Rauber has found leucocytesundergoing fatty degeneration and single pale cells (/). Occasionally milk-globulesare found with traces of the cell-substance adhering to their surface (6). Formation Of Milk.—Concerning the formation of the ind
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectphysiology, bookyear1
