Q:

How large is the cervix?

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Quick Answer

According to the Encyclopedia Britannica, the cervix is approximately 1.6 inches long and projects less than 1 inch into the upper vaginal cavity. It is lowest region of the uterus. The cervix attaches the uterus to the vagina and provides a passage between the vaginal cavity and the uterine cavity.

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Full Answer

The Encyclopedia Britannica states that the cervical opening into the vagina is called the external os. The endocervical canal is the cavity that runs the length of the cervix. The opening of the endocervical canal into the uterine cavity is called the internal os. The endocervical canal transports sperm into the uterine cavity, allows blood to escape from the uterus during menstruation and supplies mucus, which is a thick lubricating protein, to the female reproductive tract. The canal expands during childbirth.

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Related Questions

  • Q:

    What are the parts of the female reproductive system?

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    The female reproductive system includes the cervix, ovaries, uterus, fallopian tubes and vagina, explains MedlinePlus of the National Institutes of Health. This system produces the egg that is necessary for reproduction and transports it for possible fertilization. If fertilization occurs, the reproductive system cares for the fertilized egg throughout pregnancy.

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  • Q:

    What does a bump on the cervix mean?

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    According to Healthline and WebMD, a bump on the cervix can be a sign of a nabothian cyst, a cervical polyp or cervical cancer. Nabothian cysts are mucus-filled sacs that grow on the cervix wall and do not usually pose a health risk. Cervical polyps, growths that develop on the cervix, are usually benign and do not require treatment. Cervical cancer, however, which may pose a serious life risk.

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  • Q:

    Why should you not remove the cervix during a hysterectomy?

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    A woman may choose to have a hysterectomy, but keep her cervix to preserve her sex life, states da Vinci Surgery. This procedure is called supracervical hysterectomy.

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  • Q:

    What causes a closed cervix?

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    Cervical stenosis can form at birth or result from medical procedures that collapse the opening of the cervix, such as radiation therapy, surgeries to treat dysplasia or endometrial ablation, according to Merck Manuals. It is possible for untreated cervical stenosis to cause endometriosis and pyometra.

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