The role of the cervix

The cervix is ​​a very important part of the female body. The female uterus is also composed of the cervix. The cervix plays a very important role for women, especially in clinical practice, many cervical diseases have a great impact on the female body, so it is also very important to maintain the cervix in daily life, which will directly affect the female reproductive function. So what is the function of the cervix?

1. The cervix is ​​an important part of the uterus. It can secrete cervical mucus. As the menstrual cycle changes, under the action of estrogen, the cervical mucus becomes thinner, which is conducive to the passage of sperm. The cervical canal is where sperm is stored, allowing the sperm to gain energy here before entering the uterine cavity. After pregnancy, the uterus continues to grow, but the cervix remains closed, ensuring the safe growth of the fetus in the uterus until full term. During childbirth, the cervix gradually softens and dilates to allow the baby to be delivered smoothly.

2. 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 are the same as those of the endometrium. It is affected by ovarian function and shows obvious cyclical changes. During ovulation, under the action of estrogen, cervical mucus becomes thin, which is conducive to the passage of sperm. At the same time, sperm can absorb nutrients from the cervical mucus, increase its vitality, and promote the combination of sperm and egg. After ovulation, under the action of progesterone, 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.

3. The 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. The cervix 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. In addition, during full-term pregnancy and delivery, the cervix gradually softens and begins to dilate, and the cervical opening dilates from 0.5 cm to 10 cm, opening the first door for the smooth delivery of the fetus.