Human physiology . FIG. 32.—Two alveoli from pancreas of living rabbit, in state of rest and of secretory activity.(Kuhne and Sheridan Lea.) A, resting state ; B, after secretion. first stage of digestion, and regenerated at the expense of theouter zone in the second, as if the one were transformed intothe other. The later researches of Kuhne and Lea, obtained by directobservations on live rabbits, have corrected Heidenhains observa-tions in accordance with the earlier doctrine of Johannes Miiller. 94 PHYSIOLOGY CHAP. At the commencement of secretion, the cells of the tubular alveoliundergo gr
Human physiology . FIG. 32.—Two alveoli from pancreas of living rabbit, in state of rest and of secretory activity.(Kuhne and Sheridan Lea.) A, resting state ; B, after secretion. first stage of digestion, and regenerated at the expense of theouter zone in the second, as if the one were transformed intothe other. The later researches of Kuhne and Lea, obtained by directobservations on live rabbits, have corrected Heidenhains observa-tions in accordance with the earlier doctrine of Johannes Miiller. 94 PHYSIOLOGY CHAP. At the commencement of secretion, the cells of the tubular alveoliundergo gradual changes which become very conspicuous. As ispartly shown in Fig. 32, the cells shrink in consequence ofsecretion. The polyhedral cells become rounder ; the outlines ofthe cells, which in the resting state are to a large extent invisible,are well marked after secretion, with a double contour; thegranules of the outer zone move towards the lumen of the duct,become smaller, less shining, and gradually disappea
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectphysiology, bookyear1
