Transmission Electron Microscopy of the Gastrointestinal Tract of Nile Perch Lates niloticus/Uso de Microscopia Electronica de Transmision para Visualizar el Tracto Gastrointestinal de la Perca del Nilo Lates niloticus

The ultrastructure of the gastrointestinal tract of Nile perch was described using Transmission Electron Microscopy standard procedures. Investigations revealed the presence of mucous cells, blood vessels and oil droplets plus several nerve cells and muscle bundles in the oral cavity. Further observ...

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Bibliographic Details
Published inInternational journal of morphology Vol. 33; no. 2; p. 751
Main Authors Namulawa, V.T, Kato, C.D, Nyatia, E, Rutaisire, J, Britz, P.J
Format Journal Article
LanguageSpanish
Published Universidad de La Frontera, Facultad de Medicina 01.06.2015
Subjects
B cells
Electron microscopy
Fishes
Gastrointestinal system
Liver
Neurons
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Summary:The ultrastructure of the gastrointestinal tract of Nile perch was described using Transmission Electron Microscopy standard procedures. Investigations revealed the presence of mucous cells, blood vessels and oil droplets plus several nerve cells and muscle bundles in the oral cavity. Further observations revealed columnar epithelial cells in the oesophagus, with a ragged surface, high electron dense cytoplasm, intercellular spaces, mitochondria and mucus granules. The lamina propria of the oesophagus was composed of loose connective tissue, blood vessels, nerve cells and several leucocytes, while the muscularis externa was composed of striated muscle bundles with the a Z line, A band and I band. The stomach was characterized by mucosal glandular cells with electron dense granules, a prominent nucleus, mitochondria, and secretory canaliculi. The liver had an isotropic parenchyma composed of several hepatocytes with a single spherical euchromatic nucleus. The exocrine pancreatic cells in the liver occurred around large blood vessels, had large centrally positioned nuclei with electron dense nucleolus, electron dense granules, Rough Endoplasmic Reticulum, and mitochondria which dominated the cytoplasm of pancreatic cells.
ISSN:0717-9367
0717-9502