* Mounds or cushions known as pulvini interdigitate with each other to close the cervical canal.
* Mounds or cushions known as pulvini interdigitate with each other to close the cervical canal.
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* Ensures a tight coupling of the [[Male_Reproductive_Tract_-The_External_Genetalia_- Anatomy & Physiology|penis]] with the cervix to ensure that the large volume of semen produced by the boar is deposited in the [[Uterus - Anatomy & Physiology|uterus]].
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* Ensures a tight coupling of the [[Penis - Anatomy & Physiology|penis]] with the cervix to ensure that the large volume of semen produced by the boar is deposited in the [[Uterus - Anatomy & Physiology|uterus]].