Menstruation phase | Follicular phase | Luteal phase | |
(1) | Regeneration of endometrium | High level of progesterone | Developing corpus luteum |
(2) | Matured follicle | Regression of corpus luteum | Ovulation |
(3) | Menses | Developing corpus luteum | Follicle maturation |
(4) | Menses | L.H. Surge | Regeneration of endometrium |