PhD in Sexology and Psychosexual Counseling. For More Info WhatsApp-9604715783/9359863878. Female: At birth 2millions of ovarian follicles are present in the two ovaries and only 300, 000 at puberty. Only about 450 follicles develop enough to expel their ova; the remainder degenerate. A single ovum is expelled from ovarian follicle into the abdominal cavity in the middle of menstrual cycle. This ovum passes through the fallopian tube into the uterus. If the ovum gets fertilized by sperm it implants in the uterus where it develops into a fetus, a placenta and fetal membranes.