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Study of the Variations Occuring in the Fundic stomach of the White mice (Mus Musclus)during Different Ages(Postnala,Adult and Old | ||
| Iraqi Journal of Science | ||
| Article 1, Volume 46, Issue 1, 2005, Pages 75-85 | ||
| Abstract | ||
| Three groups of male Albino mice Mus musculus albinus of different ages (4 days, 10 weeks and 16 months) were used to study the variations in the histology of fundic stomach. The results obtained showed a great variation in the thickness and constituent elements of the layers: mucosa, sub mucosa and muscularis externa. The layers in the postnatal animals (4 days old) were poorly developed, lamina propria was filled with mesenchymal cells, the glands were few, small and their cells were undifferentiated yet pits unseen. Submucosa appeared as a network of thin fibers, and the smooth muscle fibers of the muscle layers showed a loose frame of small short cells. The changes in the layers of the aged animals were very interesting the glands showed different appearance. Some were atrophied others undergoing atrophy Leaving spaces in lamina propria filled with connectiv tissue elements.. Numbers of parietal and chief cells decreased in the glands. Pits became deeper than normal. Collagen fibers of Submucosa became loose incLude spaces in between. Changes include the muscle layer too. is muscle fibers undergo atrophy and loss. Connective tlSSUe elements invade the spaces left. At time of sexual maturation, layers of fundic stomach looked normal and well developed. | ||
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