Year: 2022 | Month: June | Volume 12 | Issue 3
Histological and Histochemical Studies on the Stomach of Guinea Pig (Cavia porcellus)
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 the three regions of stomach. Present study revealed that tunica mucosa of all the three regions of the stomach was lined by the 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 external was the maximum in pyloric and the minimum in fundic region.
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