Notes on digestion : a brief resumé of the latest pathologocal investigations.
- Date:
- 1886
Licence: Public Domain Mark
Credit: Notes on digestion : a brief resumé of the latest pathologocal investigations. Source: Wellcome Collection.
Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.
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![DIGESTION. The identity of the pancreas and the salivary glands, even in an anatomical point of view, is denied by Giannuzi, whose recent researches have led him to consider the pancreas as rather resembling the liver. The excretory tubes of the pancreas have very thin walls, lined inside with a columnar epithelium. They have not the same connec- tion with the secretory vesicles as the salivary glands ; but they form around them a net composed of very fine tubes, which have no epithelium, and surround the pancreatic cells with their meshes. This net may be compared to that of the biliary ducts. The net-work of the excretory tubes of the different vesicles which form the same glandular lobule, have connections between them, and form a common net-work. The pancreatic vesicles have no coat. The pavement epithelium of the vesicles is formed of flattened cells, having a nucleus and a prolongation. In short, they are very similar to those of the salivary glands; their nucleus, however, is more easily perceived, and their protoplasm is more granular, and contains fatty granulations. The semilunar bodies in the sub-maxillary glands, described by Giannuzi, and since discovered by Kolliker, Heidenheim, and Boll, in the salivary glands, are not found in the glandular vesicles. (See p. 221, Giannuzi, Comptes- rendus de I'Academie des Sciences.)—[Kiiss.] Kiihne, Danileski, Hoppe-Seyler and others, have shown that pancreatine, which is the active principle of the pan- creatic juice, is a mixture of three individual ferments, having each an independent action; the first precipitable by calcined magnesia, acts upon the fats ; the second, separated by precipitation from a solution of collodion, is the ferment of the albuminoid substances; while the third, which resembles ptyalin, is precipitated like this latter by con- centrated alcohol, and acts upon the amylaceous substances. Vulpian asks : Is there any increase in the action of the](https://iiif.wellcomecollection.org/image/b21474291_0024.jp2/full/800%2C/0/default.jpg)
