The cervix is an important part of the female reproductive system. Once a woman does not have a cervix, she generally cannot conceive normally. She needs to repair her cervix before she can have a child. The uterus is mainly where the embryo develops. Without a cervix, the fetus has no place to develop, and miscarriage is very easy to occur. Therefore, women without a cervix cannot give birth to children normally. The cervix, also known as the uterine cervix, is one of the important tissues and organs in the female reproductive system. From the embryo and female fetus to old age, the cervix involves disease prevention and health care issues such as gynecology, obstetrics, family planning, women's health and reproductive health throughout a woman's life. It involves the health of the women themselves, family happiness, economic and social issues, and is also closely related to sex and reproduction. 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. In layman's terms, as the name suggests, it means the cervix of the uterus, which connects the vagina and the uterus. The specific location is deep in the vagina, adjacent to the uterus. The position of the external cervical os in the vagina determines the type of uterine displacement. Generally, the normal position of the uterus in an adult woman is slightly anteverted and flexed. "Inclination" refers to the angle between the long axis of the uterine body and the long axis of the vagina; "flexion" refers to the angle between the long axis of the uterine body and the long axis of the cervix. Normal anteversion means that the uterine body and the vagina form an inclination angle that is open forward and approximately right angles; normal anteflexion means that the uterine body and the cervix form a flexion angle of about 170° that is open forward. The external os and lips of the cervix are in contact with the posterior wall of the vagina. Various physiological or pathological factors may lead to changes in the angle of uterine "tip" and "flexion", resulting in different types of uterine displacement: anterior displacement (anteversion, anteflexion, anteversion-anteflexion), posterior displacement (retroversion, retroflexion, retroversion-retroflexion and horizontal position) and lateral displacement (lateral tilt, lateral flexion, lateral tilt and lateral flexion), etc. The uterus is the main internal reproductive organ and is where the embryo is conceived and the fetus grows. The cervix is the opening of the uterus and is a component of the uterus. It plays the following important roles in the process of reproduction and childbirth: (1) 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. (2) The 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. (3) After 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. (4) At full term, during the delivery period, the cervix gradually softens and begins to dilate, and the cervical opening widens 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 fetus to be delivered. (5) Some people believe that the cervix is also a sexually sensitive organ and has a certain relationship with sexual life. |
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