How thick is the endometrium before menstruation can occur?

The thickness of the uterine wall is related to the regular changes of the uterine wall. The regular changes of the uterine wall include the histological changes of the uterine wall and the microbial chemical reactions of the uterine wall. The thickness of the endometrium is normal and has an impact on the histological changes of the uterine wall. How thick is the uterine wall? The normal thickness of the uterine wall varies according to the cycle, and can be 1-10mm.

The functional layer of the uterine wall is where the test tube embryo is embedded. It is regulated by the changes in uterine ovarian hormones and has regular reproduction, metabolism and shedding changes. According to the actual histological changes, the physiological cycle is divided into three stages: reproduction period, metabolism period and physiological period (taking a normal physiological cycle of 28 days as an example).

1. Reproductive period: Day 5-14 of the menstrual cycle. During this period, the thickness of the endometrium increases from 0.5 mm to 3-5 mm. The reproduction period is divided into the early appreciation period, the middle and late appreciation period and the final appreciation period. In the early stages of reproduction, which is 5-7 days into the menstrual cycle, the uterine wall is relatively thin, only 1-2 mm. The middle and late stages of the menstrual cycle are from the 8th to the 10th day, when the endometrial gland ducts increase in size. By the 11th to 14th day of the menstrual cycle, the reproductive stage has already begun, and the uterine wall has further thickened to 3-5mm.

2. Metabolic period: Day 15-28 of the physiological cycle. The uterine wall increases from 5mm to 10mm. This phase corresponds to the follicular phase in the ovarian cycle. The metabolic period is divided into the early metabolic period, the middle and late metabolic period, and the final metabolic period. The early metabolic stage is from the 15th to the 19th day of the menstrual cycle, during which the endometrial ducts are longer and more significantly curved. The middle and late metabolic period is from the 20th to the 23rd day of the menstrual cycle. The uterine wall is thicker than before and has a serrated appearance. It is the 24th to 28th day of the menstrual cycle, which is the early stage of menarche, equivalent to the decline of the follicular phase. During this period, the uterine wall is honeycomb-shaped and up to 10 mm thick.

3. Menstrual period: Day 1-4 of the menstrual cycle. This is the period when the uterine wall honeycomb layer dissolves from the rural base, which is the result of the withdrawal of progesterone and estrogen.

What is the thickness of the inner membrane? Is everything normal?

The uterine wall refers to a layer of tissue that forms the inner cavity of the uterus. The uterine wall is immediately attached to the myometrium, with no sub-endometrial tissue in between. The uterine wall can be divided into three layers: the high-density layer, the spongy layer and the dermis. The high density layer and spongy layer are sensitive to estrogen, and produce regular changes under the influence of ovarian hormone, also known as the action layer; the dermis is not sensitive to ovarian hormone and is not prone to regular changes.

The functional layer of the uterine wall is the site where the fertilized egg implants. It is regulated by the changes in uterine and ovarian hormones and has the characteristics of regular reproduction, metabolism and shedding. The dermis is regenerated after menstruation, repairing the wounds in the uterine wall and producing the functional layer of the uterine wall again.

How much is the intima thickness standard worth? The normal thickness of a woman's uterine wall is generally 1-10mm. Because the functional layer of the uterine wall will grow and fall off under the influence of growth hormone, the thickness of the uterine wall will change differently at different stages. Generally, it begins to grow slowly after the end of menstruation, grows to the thickest 24 hours before menstruation, and then the functional layer of the uterine wall tissue falls off and is discharged along with the tissue blood, which is the menarche.