What is the normal range of uterine size?

What is the normal size of a woman's uterus? The uterus is the main growth organ of women, and life is created here. Therefore, a normal uterus is very important for women. So, what is the normal size of a woman's uterus? Let's have a simple understanding and understanding of this issue. I hope the following points will be of help to everyone!

1. How much is the normal size of a woman's uterus?

Generally speaking, the size of the normal uterus changes with age, and is also closely related to whether or not a woman has given birth. For female friends who have no history of childbearing, the length of the uterus is about 7.5 cm, about 5 cm wide, and about 3 cm thick. During pregnancy, the uterus will immediately undergo a significant change in shape, with both width and thickness increasing. Maintaining a normal uterine size can ensure that female friends can successfully complete pregnancy, so if B-ultrasound examination finds that the uterus size is abnormal, it must be treated in time.

Nowadays, many female friends have a small uterus and cannot get pregnant normally. In fact, the inability of the uterus to maintain a normal size is a manifestation of uterine malformation. For example, a small uterus is a typical uterine malformation, which will seriously affect the normal reproductive process. This is also a key reason why many women cannot get pregnant.

2. The normal size range of the uterus varies with the different stages of the menstrual cycle.

The normal thickness of the uterus is different. If the uterine wall is thick, it is easy to have extra pain during menstruation, and it is difficult for the sperm and egg to combine and implant. Generally speaking, the normal thickness of the uterine wall is 0.2-1.0 cm. During menstruation, the functional layer of the uterine wall falls off, leaving only the dermis. The proliferative phase is from the 6th to the 14th day of the menstrual period, and the normal thickness of the uterine wall is about 1-3mm. The metabolic phase is from the 15th to the 28th day of the menstrual period, and the thickness of the endometrium is about 5-7mm.

3. Uterine changes during pregnancy

During pregnancy, the uterus undergoes some changes in order to adapt to the development of the fetus. When preparing for pregnancy, the uterus can only be the size of a duck pear, weighing 50 grams and with a volume of approximately 7 cm * 4.5 cm * 3.5 cm. At full-term pregnancy, the uterus weighs 1000 grams, which has increased 20 times. It can hold 5000 ml of contents including the fetus, amniotic fluid, etc. The full-term uterus is 35 cm long, 25 cm wide and about 22 cm thick.

Some basic knowledge about the uterus

1. Menstruation comes from the uterine wall

The surface of the uterus is the endometrium, where menstruation occurs. After the menstrual period, under the action of estrogen secreted by the uterus and ovaries, endometrial cells begin to grow and develop. On the 5th to 9th day, a thin layer of endometrium covers the entire uterine surface, and then gradually thickens, and the uterine gland ducts gradually increase.

2. Why is the cervix an area prone to accidents ?

The cervix is ​​the connecting passage between the uterus and the vagina, and is also an accident-prone area. Women's vagina is in contact with the outside world and they are more likely to be infected by bacteria in their daily lives, such as various microorganisms produced by women in vaginal discharge, pathogenic bacteria invasion after cervical injury during pregnancy, or bacteria infected by bad living habits.

3. During pregnancy, the uterus provides energy to the fetus

In a woman's life, the uterus and ovaries ovulate about 400 to 500 times. Ovulation usually occurs between the 13th and 16th day of the menstrual cycle, or around the 14th day before menstruation. If you have sex at this time, the probability of pregnancy is relatively high. On the 15th day, the ** and ** meet and fertilize in the fallopian tubes on both sides, and the uterine wall is quickly notified and the plan is to stop immediately, and it will continue to thicken at the current thickness of 5mm to accommodate embryo implantation.