What do a woman's hormones do to her eggs?

Hormones work to mature that ready-to-drop egg and to pop a hole in its sac. That hole works as an escape hatch, so the egg can slip out of the ovary and travel down the Fallopian tube, where it may be fertilized by sperm. Too little of these hormones may lead to infertility or miscarriage, while an abundance may lead to twins and other multiple sets. Tissue left behind in the ovary after the egg is released, called the corpus luteum, will produce hormones essential to successful pregnancy if the egg is fertilized.