. On the anatomy of vertebrates [electronic resource] . Section of Human jejunum : magu. 50diam. cxlvih. nified section of the intestinal tunics,fig. 339, a are the villi, c the submu-cous areolar tissue, e transverse fibres,/longitudinal fibres of the 1 The length of the body from the vertex to the vent, not to the heel, is that whichshould be taken for comparison of proportionate length of the intestines in Man withthose of brutes recorded in the Tables of xn, tome iv. pp. 182-208. ALIMENTARY CANAL OP BIMANA. 439 muscular coat; In fig. 341 the serous coat is marked g. In theinterspaces of th
. On the anatomy of vertebrates [electronic resource] . Section of Human jejunum : magu. 50diam. cxlvih. nified section of the intestinal tunics,fig. 339, a are the villi, c the submu-cous areolar tissue, e transverse fibres,/longitudinal fibres of the 1 The length of the body from the vertex to the vent, not to the heel, is that whichshould be taken for comparison of proportionate length of the intestines in Man withthose of brutes recorded in the Tables of xn, tome iv. pp. 182-208. ALIMENTARY CANAL OP BIMANA. 439 muscular coat; In fig. 341 the serous coat is marked g. In theinterspaces of the villi minute pores may be seen by the aidof the lens : they are the outlets of the i intestinal tubules, , 341, b. Like those of the stomach they are hollow cylinders,fig. 340, closed at the ends, e, which are buried in the areolo-. Intestinal tubes from the jejunum niagn. Intestinal follicle in vertical section; niagn. 80 diam. cxlviii. 40 diam. cxlvui. fibrous tissue: their length is about five times their width, whichaverages ^6 otn of an inch : their proper wall consists of nucleatedcolumnar cells, a, b; their mouths d, open into the area of thegut: their contents are a clear fluid and minute granules. Eachvillus is covered by an epithelium of columnar cells inclosinga parenchyme, with traces of unstriped muscular fibre, the com-mencement of the lacteal absorbents, and a rich supply ofcapillary vessels. From the analogy of the gastric tubules itmay be concluded that the intestinal ones continue the sol-vent and alterative operations on the chyme. Other arrange-ments of secreting surface relate to the furnishing of lubri-eating mucus for accessory offices: these are noted as thee follicles. They are either e solitary, fig. 341, i, or in groups,termed e agminate, fig. 342, and such patches appear to be bareof v
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