Cervical enlargement during ovulation: a possible benefit

During a woman's menstrual cycle, the cervix goes through a series of changes. At the beginning of the cycle, the length of the cervix is ​​about 3-4 cm, and then gradually grows. Mid-cycle, the length of the cervix can increase to about 5-6 centimeters, which is called cervical dilation. During ovulation, the cervix will further expand until it reaches a maximum length of approximately 7-8 cm. This process is called cervical opening.

The enlarged cervix is ​​why sperm can pass through more easily. When sperm enter the female reproductive tract, they need to pass through the cervical opening and enter the uterus. If the cervix is ​​narrow or tightly closed, it will be difficult for sperm to pass through. However, during ovulation, the cervix expands, making it easier for sperm to pass through. In addition, during ovulation, a woman's uterine fluid also increases, which helps sperm pass through the cervical opening.

Although an enlarged cervix may not be obvious to everyone, it does have some benefits for fertility. For example, during ovulation, a woman is more likely to become pregnant because it is easier for sperm to enter the uterus. Additionally, if a woman has cervical inflammation or infection mid-cycle, the cervix may narrow or close, which may prevent sperm from entering the uterus. Therefore, if women have cervical inflammation or infection mid-cycle, their fertility may be reduced.