Textbook of normal histology: including an account of the development of the tissues and of the organs . r neces-sity for or probability of theexistence of a membrane tolimit the lumen of the bile-tubule than in the case of other glands. The direct transforma-tion of the secreting hepatic cells into the epithelium of the bile-duct at the margin of theFlG- 225- lobule further opposes the assumption of such limitingmembrane, while examinationof livers in which the tubu-lar type of the acini is re-tained fails to show suchstructures within the luminaof the tubes. Emerging from the lobuleat the pe
Textbook of normal histology: including an account of the development of the tissues and of the organs . r neces-sity for or probability of theexistence of a membrane tolimit the lumen of the bile-tubule than in the case of other glands. The direct transforma-tion of the secreting hepatic cells into the epithelium of the bile-duct at the margin of theFlG- 225- lobule further opposes the assumption of such limitingmembrane, while examinationof livers in which the tubu-lar type of the acini is re-tained fails to show suchstructures within the luminaof the tubes. Emerging from the lobuleat the periphery to pass intothe adjacent interlobular con-nective tissue, the small bile-ducts empty into the largerones, which bear the branchesof the hepatic blood-vesselscompany. The interlobularbile-vessels gradually in-crease in size, owing to therepeated union of the smaller tubes, until the larger trunks unite toform the hepatic duct. While the walls of the smaller bile-ductsconsist of columnar epithelium strengthened by fibrous con-nective tissue mixed with elastic fibres, those of the large vessels. Section of liver of dog, including portion of lobule andinterlobular connective tissue («); b, portal vein ; r,hepatic artery; d, bile-ducts ; e, small peripheral bile-vessel ; g, blood-channels ; h, hepatic tissue. THE DIGESTIVE TRACT. 181 Fig. 226.
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Keywords: ., bookauthorpiersolgeorgeageorgea, bookcentury1800, bookdecade1890
