Age related changes in microanatomical features of the stomach in guinea pig (Cavia porcellus)
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Date
2020-02
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Abstract
The present work was conducted on the stomach of guinea pigs from neonate to adults (0-2 wks, 2-8
wks, 8-16 wks and 16-32 wks ) to study the histological changes in three regions of stomach. In the present
study Tunica mucosa of cardiac region was lined by Non keratinized stratified squamous epithelium with
visible stratum granulosum. The mucous membrane of fundic and pyloric parts of the stomach was lined by
simple columnar epithelium. Simple tubular cardiac glands were lined mainly by mucous cells along with
few parietal cells, enterochromaffin and undifferentiated cells. In fundic glands mucous cells and parietal cells
were predominantly in both upper and lower half of the glands where as chief cells and enteroendocrine cells
were predominantly occupied in the lower half of the fundic glands. Pyloric glands were simple branched
tubular glands were lined by mucous acinar cells. Tunica muscularis of cardiac region comprised of skeletal
and smooth muscle fibres whereas other two regions were comprised of smooth muscle fibres. The mean
thickness of tunica mucosa was the maximum in fundic region and the minimum in pyloric region The mean
thickness of tunica muscularis externa was the maximum in cardiac region and the minimum in pyloric region.
Description
TNV_20thMVC_PP_Feb-2020_PA61
Keywords
Veterinary Science