Title: REGULARITIES OF STRUCTURAL-CELLULAR STRUCTURE OF OVARIES IN ONTOGENESIS
Abstract: The article presents the examination of the ovaries of embryos, ovaries of human feti and ovaries of children of the tender
 age. The researches revealed the increase of the surface of follicles, nucleus and primary oocyte’s cytoplasm that tells
 about the fact that further follicular maturation continues in the ovaries of a child of 2–4 months old. Also we registered
 the increase of nuclear cytoplasmic ratio, appearance of single mature follicles with cumulus oophorus that testifies to
 the fact that the ovary is functionally mature. Furthermore the research revealed increased content of lipids and DNA in
 follicular epithelium that also tells about functional maturity of the ovary. It was found that incretory activity of an ovary
 during the first year of life is provided by the cells originated from the connective tissue membrane of atresic follicles.