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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
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Your Position :Home->Past Journals Catalog->2011 Vol.30 No.2

Morphological and Histological Observation on the Digestive Tract and Liver in Tylototriton wenxianensis
Author of the article:WANG Yu, YANG Xiao-lu, HE Jiu-jun, CUI Wen-hui, WANG Han, WANG Zhen-fu
Author's Workplace:(Department of Biology, Longnan Teachers College, Chengxian, Gansu Province 742500, China)
Key Words:Tylototriton wenxianensis; digestive tract; liver; histological structure
Abstract:The digestive tract and liver of Tylototriton wenxianensis were observed by histological methods. Results showed that the digestive tract was made up of four concentriclayers, which were the mucosa, submucosa, muscularis, and adventitia. The epithelia of the digestive tract were simple columnar cells, except those of the esophagus which were stratified squamous epithelia. Each part had plenty of mucosal plica.Plenteous glands were detected in the stomach. All segments of the intestine did not contain multicellular glands but included plenteous goblet cells. There were few goblet cells in the duodenum, but numerous goblet cells in the rectum.No goblet cells were distributed in the stomach. The boundaries of liver lobules were unclear. The conglobation was composed of five to eight pieces of hepatocytes, or the irregular hepatic cords lined into a radial alignment surrounding the central vein.Interlobular veins and interlobular bile ducts in portal areas were found clearly. The evidence indicates that the structural features of the digestive tract and liver in Tylototriton wenxianensisare adapted to its feeding habits.
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