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==Function==
 
==Function==
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* Provides a physical barrier to the uterus therefore preventing abortion due to infection by isolating the foetus from the external environment. It does this by creasing a highly viscous mucous plug.  Closure is via the mucosal folds.
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* Provides a physical barrier to the uterus therefore preventing abortion due to infection by isolating the foetus from the external environment, closure is via the mucosal folds.
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* Cervical mucosa produces a mucous secretion which forms a mucous plug that helps close the cervical canalThis is easily expelled during oestrus and parturition.
 
* Barrier to sperm transport in the ewe, cow, bitch and queen, but not in the sow and mare.
 
* Barrier to sperm transport in the ewe, cow, bitch and queen, but not in the sow and mare.
 
* Assists with the storage and survival of sperm by admitting sperm to the genital tract at a time when fertilisation is possible (around ovulation).
 
* Assists with the storage and survival of sperm by admitting sperm to the genital tract at a time when fertilisation is possible (around ovulation).
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