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Science International Vol. 1 (6), 2013
Research Article
Histological and Histochemical Investigation on Duodenum of Dromedary Camels (Camelus dromedarius)
T.A. Althnaian , K.M. Alkhodair , I.F. Albokhadaim , Abdelhay M. Ali , A.M. Homeida and S.M. El-Bahr
 
Abstract: The duodenum is not only an important part of the gastrointestinal tract, but also works as endocrine portion by secreting some hormones that play roles on the regulation of some organs. The present study was aimed to study the histological and histochemical patterns of duodenum in dromedary camels. Therefore, specimens from eleven dromedary camels (Camelus dromedarius) of both sexes at different ages from 2-12 years were examined. Massonís trichome and H and E stains were used for general histology and mucicarmine was used to stain mucin. The present findings revealed that, the camel duodenum is formed of four layers, tunica serosa the outermost layer, tunica muscularis which is composed the inner circular and outer longitudinal smooth muscles, tunica submucosa which composed of network of loose connective tissue, blood vessels, lymphatic nodules and duodenal glands and the innermost layer which is composed of the lamina mucosa, lamina propria and lamina muscularis. The lamina mucosa is composed of simple columnar epithelium with enterocytes, goblet cells, Paneth cells, enteroendocrine cells, lymphocytes, stem cells and intestinal glands. The lamina propria is composed of loose connective tissue, vascular and lymphatic vessels and scattered smooth muscles. The lamina muscularis is composed of smooth muscles. The mucin is found at the duodenal glands, intestinal glands and goblet cells of camel duodenum. However, the mucin is also in all parts of camel duodenum with gradual reduction from upper part to the lower part of the duodenum. Conclusively, the complete structure of camel duodenum showed that mucin was present in all parts of duodenum.
 
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