Human physiology . imple constrictor effect on the parotidvessels, others, lastly, assume a trophic influence upon the glandcells, as distinct from the secretory influence (Heidenhain). The subliugual gland is controlled by the same nerves as thosewhich regulate the secretion of the submaxillary. Stimulation ofthe chorda tyrnpani excites secretion from the sublingual as well,but requires a stronger stimulus (Cl. Bernard, Heideuhain).The stimulation of the sympathetic has no perceptible effect. III. The most obvious proof that the secretory effect ofexciting the nerves is due essentially to the
Human physiology . imple constrictor effect on the parotidvessels, others, lastly, assume a trophic influence upon the glandcells, as distinct from the secretory influence (Heidenhain). The subliugual gland is controlled by the same nerves as thosewhich regulate the secretion of the submaxillary. Stimulation ofthe chorda tyrnpani excites secretion from the sublingual as well,but requires a stronger stimulus (Cl. Bernard, Heideuhain).The stimulation of the sympathetic has no perceptible effect. III. The most obvious proof that the secretory effect ofexciting the nerves is due essentially to their trophic influenceupon the metabolism of the secretory gland-cells, is shown underthe microscope in the marked changes which these cells undergoduring secretory activity. We owe to Heideuhain (1868) this II EXTERNAL DIGESTIVE SECRETIONS fine discovery, which enables us, up to a certain point, to penetrateto the interior of the cells, and to ascertain what cytologicalphenomena accompany the process of secretion. B.
Size: 1319px × 1894px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectphysiology, bookyear1
