How far is the cervix from the vaginal opening?

The uterus is a relatively important organ in the female reproductive system. However, it is also particularly prone to problems. The cervix is ​​also an organ in the female reproductive system. It is located behind the uterine opening and the vaginal opening. However, there are always some people who, due to congenital reasons or diseases, always have the cervix far away from the vaginal opening, making it difficult to get pregnant. So how far is the cervix from the vaginal opening?

The cervix is ​​located in the lower part of the uterus. It is approximately cone-shaped, 2.5 to 3 cm long, with the upper end connected to the uterine body and the lower end extending deep into the vagina. The vault at the top of the vagina divides the cervix into two parts: the part of the cervix that protrudes into the vagina is called the cervicovaginal part, and the part above the vaginal vault is called the upper cervicovaginal part. The center of the cervix is ​​a long, fusiform lumen that is slightly flattened front to back. Its upper end is connected to the uterine cavity through the internal cervical os, and its lower end opens to the vagina through the external cervical os. The cervical canal is between the internal and external openings. The external cervical os is round in nulliparous women and transversely fissured in women who have given birth through vaginal delivery.

The size of the cervix and the ratio of the uterine body vary with age and endocrine status. The cervical wall is composed of the mucosa, muscularis and adventitia.

effect

The cervix protrudes into the vagina and contains glands that secrete a kind of mucus, namely cervical mucus. The properties and amount of this mucus, like the endometrium, are affected by ovarian function and show obvious cyclical changes. During ovulation, under the action of estrogen, the cervical mucus and cervical fluid become thinner, which is conducive to the passage of sperm. At the same time, sperm can also absorb nutrients from the cervical mucus, increase its vitality, and promote the combination of sperm and egg. After ovulation, under the action of progesterone, the cervical mucus decreases and becomes thicker, and a mucus plug may form in the cervical canal, separating the cervix from the outside world and producing a protective effect. At the same time, it is not conducive to the passage of sperm through the cervix.

⑴The cervix is ​​the first barrier for sperm to pass through. It secretes mucus. As the menstrual cycle changes, under the action of estrogen, the cervical mucus becomes very thin, which is conducive to the passage of sperm.

⑵The cervical canal is where sperm is stored. Its inner wall has many recesses and fissures, where sperm can be temporarily stored for 1 to 2 weeks, waiting to gain energy before entering the uterus.

⑶After pregnancy, the uterus continues to grow to accommodate the growth of the fetus. But the cervix remains closed, ensuring that the fetus grows safely inside it until the pregnancy is full term.

⑷ At full term, the cervix gradually softens and begins to expand during delivery, and the cervical opening opens from 0.5 cm to 10 cm, opening the first door for the smooth delivery of the fetus. Therefore, the cervix is ​​the only way for the delivery of the fetus.

⑸ Some people believe that the cervix is ​​also a sexually sensitive organ and has a certain relationship with sexual life

How far is the cervix from the vaginal opening?

Most women have a length of about 10 centimeters, and when squatting, it is even shorter than 3 centimeters.

Only by ensuring that the uterus is free of disease and develops normally can we ensure that girls are especially prone to pregnancy. The above is an introduction to how far the cervix is ​​from the vaginal opening. After understanding it, we know that the normal cervix is ​​10 cm away from the vaginal opening. We must master some common sense in daily life so that we can discover problems in the body in time.