1. Follicular phase This is a phase controlled by estradiol, during which follicles in the ovary mature. 2. Ovulation This is a phase in which eggs are released from the ovaries when the follicles rupture. 3. Luteal phase This is the phase is under the control of progesterone. At the beginning of luteal phase, corpus luteum is formed and it ends in either pregnancy or luteolysis.
