Embryology of the reproductive tract.- Neuroendocrine control of ovarian function.- Dynamics of follicular changes in the ovary before puberty.- Puberty.- Ovarian cycle and folicular growth.- Ovulation.- Development of the corpus luteum.- Lysis of the corpus luteum.- The uterus. Histological and physiological aspects.- First stages of embryonic development, histogenesis of the placenta and pregnancy maintenance.- Embryonic survival and mortality.