FORMATION OF SMALL INTESTINAL WALL MORPHOLOGY IN EARLY POSTNATAL ONTOGENESIS
Keywords:
Small intestine, newborns, morphology, mammals, ontogenesis, congenital pathologies, regulatory structures.Abstract
Modern society emphasizes the importance of the period of early postnatal ontogenesis for the process of morphofunctional differentiation of organs and systems of the future organism, since anomalies in their formation during ontogenesis can be a potential cause of the development of a variety of congenital pathologies. The results of our experimental studies confirm that by the time of birth of rabbits the main structural components of the small intestine wall are formed, but their morphometric parameters and morphological characteristics differ significantly from the small intestine of adults. The small intestine of rabbits at the age of 10 days shows significant morphometric and structural differences from the small intestine of newborn rabbits. The total wall thickness increases mainly due to an increase in the size of the mucosa and submucosa, and the formation of villi and crypts in a different shape from adults begins.
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