Womens Health

Menstruation and hormonal phases

While it is true that women are increasingly aware of the importance of having sufficient information about their body and changes that occur in it, it is always interesting to learn more and perhaps discover aspects we did not know and that we will be useful when to recognize and interpret the signals sent by our body. What happens to our body during menstruation is one of the areas in which we focus this time in the menstrual cycle and hormonal stages.

menstrual cycle


The menstrual cycle can be defined as the period of time between menstruation and next, with duration of 28 days; while menstruation itself indicates blood loss of the female genitalia, the expulsion of the endometrial tissue when there is the fertilization of the egg.

Natural process that will be repeated each month during the childbearing years, from puberty to menopause, except during pregnancy. It all starts from 11 to 16 years, during puberty, with the first period, which is defined as menarche, and is accompanied by some typical symptoms such as breast growth and the appearance of pubic hair.

Hormonal Phases

Each menstrual cycle consists of four phases: menstrual, follicular, ovulation and luteal. The menstrual phase begins with the first day of menstruation, for 3 to 5 days and is defined as bleeding to expel the endometrium and waste and fluids from the vagina. During the follicular phase, estrogen favoring the thickening of the endometrium lining of the uterus, to accommodate the egg if fertilization.

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During this stage also it involved another hormone, specifically a follicle stimulating hormone (FSH), which promotes the development of ovarian follicles to contain the eggs. Increased estrogen and luteinizing hormone (LH) causes the breakage of the follicles and the release of the egg. This second phase occurs between the sixth and fourteenth day of the menstrual cycle.

During ovulation, phase is triggered the release of the egg ready to be fertilized, which occurs in mid-cycle, the fourteenth day after menstruation occurs. Once released the egg it enters the luteal phase, so named because the follicles mutate in a substance (corpus luteum) that favors the production of progesterone. If there is no fertilization, the endometrium is clear and gives rise to a new rule, beginning while another menstrual cycle.