Manual of human histology . rkdhnian glands {cryptce mucosce),are distributed over the whole small intestine, including theduodenum, as innumerable, straight, narrow caeca, whichoccupy the entire thickness of the mucous membrane and arefrequently slightly enlarged at their extremities, though hardlyever dicliotomously divided. The best idea of their number isobtained by viewing the mucous membrane either from aboveor in vertical section, under a low power. In the latter case,we see the cseca standing close together, almost like palisades that in which the ingesta enter an Actinophrys; one can
Manual of human histology . rkdhnian glands {cryptce mucosce),are distributed over the whole small intestine, including theduodenum, as innumerable, straight, narrow caeca, whichoccupy the entire thickness of the mucous membrane and arefrequently slightly enlarged at their extremities, though hardlyever dicliotomously divided. The best idea of their number isobtained by viewing the mucous membrane either from aboveor in vertical section, under a low power. In the latter case,we see the cseca standing close together, almost like palisades that in which the ingesta enter an Actinophrys; one can as readily comprehendthe existence of a selective power in the former as in the latter case. That somesuch faculty exists would seem to be indicated by the fact stated by Brlich, that theLieberkuhnian and Peyerian glands take no share in fatty absorption; though, onthe other hand, it must be remembered that Kolliker found the eggs of Entozoa inthe villi of rabbits (Mikr. Anat., B. II, 2, 173).—Eds.] 100 SPECIAL follicles,thickness (fig. 206); in the former, we observe that the glands do notoccupy the whole surface, but only the interspaces betweenFig. 212. the villi j here, however, they exist in such numbers, as toleave no intervals of any width,the mucous surface between thevilli appearing pierced like asieve. Even on Peyer^s patchesand over the solitary follicles, theseglands are to be met witb; butin man, they leave those portionsof the mucous membrane which lieimmediately over the centre of thefollicles free, and therefore arearranged like rings around theThe length of the Lieberkiihnian glands equals theof the mucous membrane and varies from \—I;their breadth is 0028—0-036; that of their aperture, 0-02—0-03. They are composed of a delicate homogeneous mem-brana propria and of a cylindrical epithelium, which, evenduring chylification, never, like that of the intestine, containsfat; their cavity is filled, during life, by a clear, fluid secretion,the so-
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Keywords: ., bookcentury1800, bookdecade1850, booksubjecthistolo, bookyear1853
