Female Reproductive System: Anatomy Overview The female reproductive system consists of external and internal structures. These structures work together for processes such as oogenesis (egg production), fertilization, pregnancy, and childbirth. External Structures: Internal Structures: Blood Supply and Nerve Innervation Menstrual Cycle: Overview The menstrual cycle is a natural physiological process that prepares a woman’s body for pregnancy. It is regulated by the interaction of hormones and occurs in a cyclic