Menstruation

A menstrual cycle has several phases. The first day of menstruation is the start of a new cycle. A menstrual cycle goes through the following stages: the menstrual phase, the follicular phase, ovulation and the luteal phase.

During the phase preceding menstruation, progesterone levels rise and you may experience some symptoms. At the same time, the uterus becomes well supplied with blood and produces much thicker mucus so that it becomes suitable for the implantation of a fertilized egg. If the egg is not fertilized then the production of the hormones progesterone and estrogens stops and the endometrium will die and then loosen and be expelled. This is called menstruation.

Women have two ovaries (ovaries) in which large numbers of immature eggs are stored. During the follicular phase, the eggs mature.

In women, a mature egg suitable for reproduction is released once in a cycle averaging 28 days; this is called ovulation, or ovulation. The egg is slowly passed through the fallopian tube to the uterus whether the egg is fertilized or not. If the egg is released then it is suitable for fertilization for another 24 hours.

The luteal phase begins at the time from ovulation to menstruation. At ovulation, the egg jumps out of its follicle. A follicle is a vesicle in which the egg can mature. After ovulation, the empty follicle turns into the yellow body. The remnant of the follicle is called corpus luteum or yellow body. The yellow body produces progesterone, which further prepares the endometrium (endometrium) for implantation of a fertilized egg.