STUDY OF MORPHOLOGICAL FEATURES OF THE SEROUS COLUMN OF THE MESSIAH OF THE COLON INTESTINAL
DOI:
https://doi.org/10.32782/naturaljournal.11.2025.8Keywords:
intestine, film preparations, lymphocytes, abdominal cavity, intestinal mesentery, gastrointestinal tractAbstract
Modern research emphasizes the growing role of applied morphology in studying the causesand mechanisms of formation of anatomical variants of the structure of internal organs. The relevance of this work lies in the need for a comprehensive analysis of the topographic and anatomicalfeatures of the serous membrane of the large intestine, which is important for creating new, more effective methods of surgical correction. To study the morphological features of the serous membrane of the mesentery of the large intestine and the features of taking film material from white rats inthe norm for further histological studies. The study was conducted on 10 young male white rats,aged 5,0–6,0 months and weighing 150–200 g. Macroscopic examination provided for determiningthe shape of the mesentery of the large intestine and its morphometric characteristics, in particular length, width and area. Fixation of the preparations was carried out in Bouin’s solution for 24 hours, after which the samples were washed in running water for 2 hours. Staining was performed according to the standard method using hematoxylin and eosin. Ready-made stained preparations were fixed in Canadian balsam and examined at different magnifications of the microscope. It was established that the mesentery of the large intestine is a set of dense folds of the peritoneum, covering the loops of the large intestine, separating them from the posterior wall of the abdominal cavity. The mesentery has a thin, elastic, smooth, almost transparent, shiny structure, of uniform density, in which the blood vessels are located closer to the cavity of the large intestine. During the planimetric analysis, the length of the mesentery of the large intestine was examined – 11,2 ± 0,3 cm; width – 6,9 ± 0,8 cm; area – 57,4 ± 0,4 cm2. It was established that the number of lymphocytes per standard studied areaof the serous membrane of the colon mesentery is 4,8 ± 0,42 cells (1 000 μm2), which is withinnormal limits.
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