. The endocrine organs; an introduction to the study of internal secretion . IP oSO 0> ~ O-tJ XO 3-u £( o> .0O r— I— O -S rJiO I •5s — e&, o I 03 a> o -u o CO CD Effects of Extracts of Posterior Lobe of Pituitary 93 to the breast, although there may be no actual outpouring of thesecretion. If in the experiment upon the cat the animal is killed immediately afterone of its glands (with nipple incised) has been emptied by an intravenousinjection of extract of posterior lobe in the manner above described, and ifa portion of tissue comprising parts of two adjacent mammae—one emptied d. FIG
. The endocrine organs; an introduction to the study of internal secretion . IP oSO 0> ~ O-tJ XO 3-u £( o> .0O r— I— O -S rJiO I •5s — e&, o I 03 a> o -u o CO CD Effects of Extracts of Posterior Lobe of Pituitary 93 to the breast, although there may be no actual outpouring of thesecretion. If in the experiment upon the cat the animal is killed immediately afterone of its glands (with nipple incised) has been emptied by an intravenousinjection of extract of posterior lobe in the manner above described, and ifa portion of tissue comprising parts of two adjacent mammae—one emptied d. FIG. 64.—Effect on blood-pressure and mammary gland of a lactating cat of injecting extractof 0125 g. of posterior lobe of pituitary. (From K. Mackenzie, Quart. Journ. Exper. P/iysioL,1911, vol. iv.) a, tracing of blood-pressure: notice that the main rise is preceded by a preliminary fall; b, drops of milkexuding from a fine canula introduced into one of the lactiferous ducts; c, drops of milk exuding fromincised gland ; d, signal; e, time in ten seconds. of its secretion as the result of the injection, the other with its alveoli stillfull of milk—is fixed and sections are made passing through both full andempty mammae, the contrast in appearance is remarkable (fig. 65). In theone, where the alveoli are distended with secretion, they are large androunded and the lining cells are flattened against the limiting membrane,whilst in the other, from which the secretion has been discharged, the alveoliare irregular, shrunk, and empty, their walls are folded, and the lining cellsstand pro
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