sperm - male sex cell, testes - produce testosterone, the male sex hormone. , egg - female sex cell, ovary - female reproductive organ that produces eggs, fallopian tube - connects ovary to uterus, uterus - the organ in which a fertilized egg develops, vagina - canal between uterus and outside of body, embryo - a fertilized egg, menstruation - this occurs monthly when an egg is not fertilized, placenta - a network of blood vessels that provide embryo with oxygen and nutrients, umbilical cord - connects baby to the placenta, fetus - after 10 weeks, this is what an embryo is called,

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