Bulyk R. Ye., Proniaiev D. V., Popeliuk O.-M. V., Proniaiev V. V.

MORPHOLOGY

Scentific article

New, unknown earlier data concerning chronological succession of topographic-anatomical interrelations of the pelvic organs between themselves and adjacent organs and structures during the perinatal period of human ontogenesis were obtained by means of current and classical methods of investigation. Perinatal normative anatomical standards of the female pelvic organs are determined for the first time. On the basis of the results obtained the stages of a definite structure formation of the female pelvic organs are determined in dynamics of their development as well as the mechanisms of occurrence of their structural variants and possible CDD. It will enable to understand better the course of pathological processes, prevent possible complications, and form an anatomical basis for development of new methods of their surgical correction in fetuses and neonates. For the first time the succession of formation of the rectum, uterus, ovaries, uterine tubes and vagina during the fetal and early neonatal periods of human ontogenesis was determined. Normative fetal parameters of the female pelvic organs and the periods of their slow and accelerated development were determined on the basis of the morphometric and statistical analyses conducted. Possible variants in the structure and topography of the rectum, ovaries, uterus, vagina and uterine tubes were first substantiated. New scientifically substantiated data contribute considerably current views concerning the regularities of ontogenetic chronology of the perinatal development of the female pelvic organs. During caudal transition of the ovaries their morphometric parameters increase relatively slow (5-8-month fetuses), which is evidenced by the determined reliable correlations of an average force between the ovarian width and PCL of the fetus. Morphometric parameters of the right ovary width in the fetuses during this term of development range from 3,4±0,82 mm to 4,1±0,64 mm, and the left one – from 3,2±0,59 mm to 3,7±0,25 mm. During the fetal period certain changes in the microscopic organization of the ovarian parenchyma are found which is manifested in gradual migration of the medullary substance and cortical cords from the center with their gradual disappearance in the portal portion in 8-month fetuses and their simultaneous substitution by the blood vessels. The differences found in the anatomical structure of the ovaries in fetuses of various terms differ totally from those in the postnatal period of human ontogenesis.

uterus, vagina, rectum, anatomy, human.

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«Bulletin of problems biology and medicine» Issue 2 Part 2 (165), 2022 year, 32-41 pages, index UDK 611.65/.66.013-053.15

10.29254/2077-4214-2022-2-2-165-32-41