Abstract:
The study of ovarian and uterine morphology and morphometric parameters during postnatal ontogenesis is
essential for understanding reproductive development in mammals. This research investigates the structural and dimensional
changes in the ovaries and uterus of white laboratory rats (Rattus norvegicus) from birth to sexual maturity. Histological and
morphometric analyses were conducted at key developmental stages (neonatal, prepubertal, pubertal, and adult phases). The
results demonstrate progressive growth in ovarian follicle populations, with primordial follicles dominating early stages and
Graafian follicles appearing at puberty. Uterine morphometry revealed significant increases in wall thickness, luminal
diameter, and glandular development post-puberty. These findings contribute to comparative reproductive biology and
provide a foundation for further studies on mammalian reproductive organ development.
