Abstract
The female reproductive tract, composed of the ovaries, oviducts, uterus, cervix, and vagina, is immature at birth and develops into a fully functional reproductive unit by PND 42. The ovary is considered mature once the rat has experienced at least two ovulatory cycles, and this typically occurs by PND 42. Not all segments of the reproductive tract mature at the same rate as the ovary. The epithelium of the oviduct has all its components by PND 21 and the epithelium of the vagina is hormonally responsive by PND 30. The aim of this chapter is to describe the postnatal histological development of the female reproductive tract tissues and highlight important developmental landmarks in each tissue at the various postnatal ages.
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