Ontogenyc transformations of ovaries in prenatal period of numan development.

Морфологія

关键词: ovary;    embryogenesis;    embryo;    prefetus;    fetus;    human;   

DOI  :  

来源: DOAJ

【 摘 要 】

The investigation is dedicated to a study of peculiarities of morphogenesis and the establishment process of ovaries in prenatal period of human ontogenesis. With the help of a complex of morphological methods human embryos, prefetuses and fetuses have been researched. А marked variance of the external structure and the location of the ovaries in prefetuses and in fetuses has been established, the periods of their accelerated and delayed growth have been deter-mined. Asymmetry of the ovaries and their correlation on the basis of the morpho-metric parameters has been estimated. The ovaries are located in the abdominal cavity more cranially to the terminal line of the pelvis prior to the birth of an infant. For the first time the rate of the ovarian growth during the fetal period, the absence of morphofunctional interdependence of the formation of the ovaries and pelvic bones have been evaluated. The prefetal period is distinguished by the process of delimitation of the sexual glands from the mesonephroi and that results in the formation of the mesentery and hilum of the gonads, by the dynamic character of the topographo-anatomical relationships of the sex glands with the adjacent organs and structures, as well as close correla-tions with the development of the gastrointestinal tract, liver, pancreas, adrenal glands and mesonephroi. The ovaries of 4-6 month old fetuses are to be found in the abdominal cavity in a vertical position, as a rule. An oblique position primarily, seldom a horizontal position of the ovaries are observed in 7-9 month old fetuses. A horizontal position of the ovaries prevails in 10 month old fetuses. During the fetal period close topo-grapho-anatomical relationships of both ovaries with the loops of the small intestine, sigmoid colon, ureters, common iliac vessels are defined.

【 授权许可】

Unknown