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introductionstatpearls· Introduction· item NBK532300
The ovary has 2 primary functions. First, it produces hormones that drive the female reproductive system, principally estrogen and progesterone. Second, it controls the development, selection, and release of mature oocytes for fertilization. This process, known as ovarian folliculogenesis, begins while the female is in utero. After puberty, primordial follicles undergo a multi-step process to transform into mature, pre-ovulatory follicles.