Researches into the comparative structure of the liver / by Joseph Leidy.

  • Leidy, Joseph, 1823-1891.
Date:
[1848?]
Catalogue details

Licence: Public Domain Mark

Credit: Researches into the comparative structure of the liver / by Joseph Leidy. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    Fi. 9 A OOecWB or biliary tube of the crayfish (from an Individual winch urn one inch in length and bad been well t.-d for some time)- highly magnified die bottom is seen a confused mau of cella with their nuclei ami nucleoli, but at the upper part of the sac they are Been distinct, and polygonal fi pressuri and tilled with oil whieh renders them transparent At the mOUtb or open extremity numerous detached cells and oil globules are perceived, which have been squeezed out by the pressure of a thin plate- of ula->. Figs, 10, 11, 12, 13, a, b, Exhibit the progressive change of the cells as they advance from the bottom of the tube. Fiu'. H, Nuclei, from the secreting cells of the liver of the cray fish, highly magnified, 15 Fortion of the liver of the snail (Helix ulbolabris), moderately magnified, exhi- biting the arrangement of the lobules. 16, A biliary CCSCUm from the liver of the snail, highly magnified. It shows the same structure as fig. 9. 17, a, b, Two cells, from the Ixrttom of a biliary coecum of the snail, highly magnified. 18, a, b, Two cells, more advanced, containing numerous very minute oil globules 19, a, b, c, Three cells, containing larger oil globules. 20, A cell distended with oil. 21, A cell containing nothing but six deep yellow consistent oil globules. 22, A cell containing a hard yellow mass of fat. 23, A cell ruptured and its contents escaping. 21, Nuclei, from the cells of the liver of the snail, highly magnified. 25, Portion of a biliary tube and secreting cells, from the liver of a lizard (Triton niger), highly magnified 20, Secreting cells, from the liver of an owl (Slrix brachyotos), highly magnified. 27, from a duck (Anas acuta). u 28, Portion of a biliary tube of the rabbit (T-epus Americanus), highly magnified. 29, 30, Secreting cells from the liver of the rabbit. 31, Longitudinal section of human liver from the posterior part near the upper sur- face, magnified 3 diameters, from a preparation made by Prof. W. E. Home] of the University of Pennsylvania. The three sets of blood-vessels were in- jected with colouring matter and the preparation then preserved in alcohol. The blood-vessels represented in the drawing belong to the hepatic veins, and are seen at various parts coming from the interior of the lobules. The spacei between the lobules, which are rilled with branches of the hepatic artery and vena portarum and hepatic ducts, have been purposely left white so as not to obscure the view of the lobules. 32, Transverse section of a lobule of the human liver, taken from the same prepa- ration as fig. 31, highly magnified, and presenting to view the reticulated struc- ture of the biliary tubes. In the centre of the figure is seen the hepatic vein cut across and several small branches terminating in it. Where the injecting matter did not run freely, it is seen standing in dots along the course of the vessels. At the periphery are seen branches of the hepatic artery, vena porta- rum and hepatic duct. 33, A small portion of fig. 33 more highly magnified. The secreting cells are seen within the tubes, and in the interspaces of the latter the fibrous tissue is repre- sented. 34, Portion of a biliary tube, from a fresh human liver, very highly magnified. The secreting cells may be noticed to be polygonal from mutual pressure. u 35, Three secreting cells detached. u 3G, A secreting cell much more highly magnified, representing plainly the internal