What is the cervix?
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The cervix is the lower part of the uterus (womb) which extends slightly into the top of the vagina. The cervix is often called 'the neck of the womb'.
A narrow passage called the cervical canal (or endocervical canal) goes from the vagina to the inside of the uterus. This is normally kept quite tightly shut, but allows blood to flow out from the uterus during a period, and sperm to travel inside if you have sex. It opens very wide during labour if you have a baby.
The surface of the cervix is covered with skin-like cells. There are also some tiny glands in the lining of cervical canal which make mucus.
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Where to next?
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Cervical cancer vaccines for all girls
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Jade Goody's life on film
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Smear test confusion after Jade's death
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What are the treatment options for cervical cancer?
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What happens when cancer spreads?
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What Jade's cancer battle can teach us
