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Four Phases Of Menstruation

By on August 13, 2012

Four Phases Of Menstruation The body of every human being goes through several changes physiologically and if we know its mechanism then we can take significant benefits out of it and can make the changes in our life and diet accordingly. The process of menstruation is a female body function which occurs normally after every 28 days.

This can be between 23-35 days for some females. So in these 28 days, our body will not experience only one change. Several changes have to be observed as the control of the menstrual cycle is with the endocrine system.When the hormones of the endocrine system fluctuate our mood also swings. So it becomes imperative to understand the balance of our body so that we will not affect the normal process of the ovulation of hormones in the body. This article will help you to understand from the phases that our body passes through in 28 days.

Phases of Menstruation

Follicular Or Pre-Ovulation Phase

This is the first phase of the menstruation which is also known by the name pre-ovulation or proliferative phase. During this phase, the anterior pituitary gland secretes the hormones Follicle-stimulating hormone and Leutanizing hormone to the ovaries due to the reception of signals of the hypothalamus in the brain.

The follicle will secrete estrogen in the uterus which will lead the uterus walls to proliferate and becomes thick. When the uterus walls proliferate the thickness in the uterus lining increases which makes the female body ready for the implantation of the egg in the uterus where the fetus can grow if the egg will get fertilized there. If no fertilization takes place then the lining of the uterus will start giving a discharge of red blood.

Ovulation Phase

When the uterus wall thickens and the follicle becomes matured then the stage of ovulation starts. As the term ovulation indicates that this period is the most fertile period.

Four Phases Of Menstruation

Source: https://myhealth.alberta.ca/health/pages/conditions.aspx?hwid=aa58491&

During this phase, the mature follicle separates and the mature egg is released. The fallopian tube starts to extend the egg into one direction.Leutanizing hormone instigate the opening of the follicle which releases the ovum and other fluids of follicle that contains the hormone estrogen.

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Luteal Phase

The ruptured follicle become a corpus luteum in the luteal phase which will continue to secret the estrogen hormone.However, the estrogen level decreases with the increase in the leutanizing hormone. The progesterone hormones will also increase which is dependable for the acceptance of the uterus lining for the arrival of the ovum. Some other effects of the increased progesterone hormone are breast sensitivity; degeneration of the corpus luteum to corpus albicans. When progesterone decreases it will lead to a flow of menstruation.

If the ovum receives the sperm cells then the embryo will implant in the uterus and a hormone called human chronic gonadotropin will secrete and it will indicate the corpus luteum to keep on secreting the progesterone and estrogen and not to become corpus albicans. So the corpus luteum is called by the name corpus luteum graviditatis at this stage till the placenta gets fully developed and becomes capable to produce hormone progesterone.

Menstrual Phase

If the ovum does not receive sperms or it does not fertilize then the corpus luteum will become a corpus albicans. The level of hormone progesterone decreases which will lead to contraction of the blood vessels and the supply of blood will decrease. This is the reason behind menstruation for a week.

Photo Credit: http://girltalkforfun.weebly.com/puberty–periods.html

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