Literaturdatenbank
Literaturdatenbank |
|
 |
|
Perez-Tomas, R., Ballesta, J., Madrid, J. F., Pastor, L. M., & Hernandez, F. (1990). Histochemical and ultrastructural study of the digestive tract of the tortoise testudo graeca (testudines). Journal of Morphology, 204(3), 235–246.
Added by: Sarina Wunderlich (13 Oct 2008 21:33:04 UTC) |
| Resource type: Journal Article BibTeX citation key: PerezTomas1990 View all bibliographic details  |
Categories: General Keywords: Histologie = histology, Schildkröten = turtles + tortoises, Testudinidae, Testudo, Testudo graeca, Veterinärmedizin = veterinary medicine Creators: Ballesta, Hernandez, Madrid, Pastor, Perez-Tomas Collection: Journal of Morphology |
Views: 4/527
Views index: 9% Popularity index: 2.25% |
| Abstract |
|
Testudinidae The digestive tract of the tortoise Testudo graceca (Testudines) was investigated by means of light and electron microscopy. The esophagus of T. graceca was lined by two types of epithelium: non-keratinized stratified squamous in the upper portion and stratified columnar in the lower. The lamina propria of the esophagus contained tubular or tubuloacinar glands. The mucosa of the stomach showed similar characteristics to those of other reptiles. The small intestine exhibited longitudinal folds lined by absorptive and goblet cells. The large intestine was lined by columnar mucous cells. With the lamina propria of the large intestine, masses of 10-15 epithelial cells connecting with the surface epithelium by means of slender cytoplasmic processes were observed. A battery of six lectins (Con-A, PNA, WGA, DBA, SBA, and LTA) was used to identify the epithelial mucins. WGA and DBA reacted with all types of mucous cells throughout the alimentary canal. PNA was only unreactive in the intestine, LTA in the esophagus, and SBA in the large intestine. These results indicate a similar lectin-binding pattern throughout the gut of T. graeca.
Added by: Sarina Wunderlich |