My period is here

When your period comes, it is mainly the shedding of some endometrium during menstruation. The shedding endometrial tissue is discharged from the vagina, which is collectively called menstrual blood. At the same time, it is also what we call period in daily life. For women and some animals that cannot achieve female sexual intercourse, the fixed appearance of their feelings will also take their favorite things away. Under normal circumstances of the menstrual cycle, the amount of bleeding for the first time is between 300 ml and 80 ml.

The first menstrual period is special. Which part of the menstrual cycle is more critical in daily life? If you know some deep systems of the corpus luteum of the mature follicles in adolescence, the main thing that will pop up is the number of days between two menstrual periods.

Menstruation, also known as the menstrual cycle, is a physiological cycle that occurs in some fertile female humans and other hominins. Other mammals go through estrous cycles. In women of childbearing age and female primates, the endometrium undergoes a period of autonomous thickening, vascular proliferation, glandular growth and secretion, and endometrial collapse and shedding every month or so.

The symptoms are accompanied by periodic changes of bleeding. This periodic vaginal discharge or uterine bleeding is called menstruation.

The uterus bleeds once a month, which is called menstruation. The ovaries have the functions of laying eggs, releasing ovulation and producing hormones. The hormones secreted by the ovaries are mainly estrogen, progesterone and androgen. Among them, estrogen is very important for maintaining the cyclical development and function of sexual organs, secondary sexual characteristics and ovaries. Progesterone mainly acts on the uterus to ensure the progress of pregnancy. Androgens increase sexual desire and are also involved in the regulation of follicle growth and egg maturation.

When a woman reaches puberty, the follicles mature and, with the help of luteinizing hormone, the follicles secrete estrogen and stimulate the endometrium to undergo proliferative changes. The amount of estrogen gradually increases, causing the endometrium to thicken, the glands to increase in number and lengthen, becoming curved, and the blood vessels to become spiral, which is called the proliferative endometrium. This is approximately day 11 to 14 of the full-term menstrual cycle. At this time, estrogen reaches its peak, and a large amount of estrogen acts on the hypothalamus, causing the pituitary gland to release a large amount of luteinizing hormone, thereby promoting ovulation of mature follicles. After ovulation, the ruptured ovum forms a corpus luteum. The corpus luteum secretes progesterone, which, together with estrogen, causes the endometrium to enter the secretory phase. If fertilization is not achieved at this time, the corpus luteum will atrophy, the secretion of progesterone and estrogen will decrease, the endometrium will not receive support from sex hormones, and will undergo necrosis and shedding, leading to menstruation. This is why the uterus produces menstruation.

The above is the period, which mainly occurs every twenty-four to thirty-five days. The long-term menstrual cycle is mainly from the first day of menstruation to the first day of the next menstruation. There are also key factors for delayed menstruation in daily life. The main factors are the side effects of some drugs, surgery, and some mental stress and tension caused by pregnancy.