Abstract
Histological studies have established that the pancreatic parenchyma is represented by the acini, the wall of which consists of 6-18 cells. In the rounded acini there are from 12 to 16 acinocytes, the nuclei of which are spherical and located centrally. The elongated acini contain about 15-18 cells the nuclei of which are located at the basal part of the cell. Small acini with 5-9 acinar cells are also found, and in rare cases, acini with more than 18 acinocytes are ob-served. The size of the nucleus varies even in cells of the same type at different stages of the functioning of the same secretory cell. The muscle coat in the excretory and accessory ducts of the pancreas in the raccoon dogs is absent. Proliferation of acinocytes and differentiation of ductal cells contribute to the formation of new acini. In the functioning of acinar tissue, heterogeneity is revealed. Morphological changes in the exocrine pancreas of the raccoon dog puppies should be considered as a compensatory-adaptive reaction of the organism.
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