author(s)
Iniyah K, Jayachitra S, Balasundaram K and Arulmozhi A

abstract
The present study provides a baseline data on histology of exocrine part of the pancreas of large white Yorkshire pigs. Histological study revealed that the gland was covered by a thick connective tissue capsule in splenic lobe and a thin capsule in duodenal and connecting lobes. The capsule of all the pancreatic lobes consisted of collagen, elastic, reticular fibres, adipose tissue, blood vessels and nerves. The interlobular and intersublobular septa divided the gland into lobules and sublobules. Each sublobule consisted of exocrine pancreatic acini and endocrine islets of Langerhans. The exocrine portion of pancreas consisted of many serous acini which were lined by pyramidal cells. At the basal portion of pyramidal acinar cells, spherical shaped condensed and vesicular types of nuclei were noticed. Numerous zymogen granules were observed in the apical cytoplasm of all the acinar cells. Centroacinar cells were also observed in the lumen of pancreatic acini. The duct system of exocrine pancreas was consisted of intercalated duct lined by squamous cells, intralobular duct lined by cuboidal epithelium, interlobular and main ducts lined by columnar epithelium. Numerous goblet cells among the columnar epithelial cells and small serous glands in the lamina propria were observed in the main duct.