[Quantitative characteristics of the endocrine cells of the duodenal glands of Carnivora].

In the duodenal glands of the Carnivora investigated endocrine elements have been revealed, a part of them is presented as serotonin-producing EC-cells. Endocrine cells are situated in terminal parts and in glandular ducts, among them elements of open and close types are distinguished. Distribution of these cells in the glandular lobules is subjected to the distal gradient regularity, specific for the gastrointestinal tract mucosal membrane. Amount of endocrinocytes in the glands is much less than in the gut crypts. There is no correlation between distribution of the endocrine cells in the glands and in the crypts. The results of unifactor analysis of variance demonstrate a slight effect of the taxonomic position of the species on the number of endocrine cells in the duodenal glands. The proper endocrine apparatus of the duodenal glands is supposed to produce a local regulatory influence on the secretory activity of exogenic glandulocytes, as well as ensure humoral connections of the duodenal glands with other parts of the gastrointestinal tract.