The cervix is a narrow, cylindrical structure located at the lower end of the uterus, connecting it to the vagina. It plays a crucial role in the female reproductive system, acting as a passageway for menstrual fluid to exit the body and for sperm to enter during conception. The cervix also helps protect the uterus from infections. During pregnancy, the cervix remains tightly closed to support the developing fetus. As labor approaches, it softens and dilates, allowing the baby to pass through the birth canal. Regular check-ups, including Pap smears, can help monitor cervical health and detect any potential issues early on.