What does a long cervix mean?

The cervical canal is very important for women. The cervical canal has a certain length. If the length of the cervical canal is relatively short or too long, it will be very disadvantageous for women. In addition, during pregnancy, the cervical canal of women also has a certain normal length, and its length can be detected through B-ultrasound. Next, I will introduce you to the relevant knowledge about the cervical canal!

1. What does cervical canal length mean?

The cervix is ​​an important organ of women. The length of the cervical canal means the total length of the cervix. Different lengths of the cervical canal will also affect the whole process of women's pregnancy and childbirth. Therefore, a lot of examination data are needed to determine the length of the cervical canal. Generally, around 22 weeks of pregnancy, B-ultrasound is needed to understand the length of the cervical canal.

When women check the length of their cervical canal, if the length is no more than 30 mm, premature birth generally will not occur. This is a normal value. If it is less than 30 mm, especially less than 25 mm, the possibility of premature birth will be very high. Therefore, the length of the cervical canal can be used to determine whether there will be problems with premature birth, so that preparations can be made in advance.

2. Introduction to the cervical canal

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.

3. What is the normal length of the cervical canal?

The normal length of the cervical canal is divided into non-pregnancy and pregnancy. The length of the cervical canal in the non-pregnancy period is generally around 2.5-3cm; the length of the cervical canal during pregnancy varies with the gestational age, generally greater than or equal to 3cm at 16 weeks and greater than or equal to 2.5cm at 24 weeks; in addition, the shortening of the cervical canal during pregnancy needs to be taken seriously to rule out the possibility of cervical insufficiency, so as to avoid complications such as premature birth and premature rupture of membranes; the cervical canal, the cervix is ​​located in the lower part of the uterus, is approximately cone-shaped, 2.5~3cm long, the upper end is connected to the uterine body, and the lower end is deep in the vagina.