A ==Key Stage 3=====Meaning===The [[cervix]] is a ring of [[muscle]] between the [[uterus]] and [[vagina]]that keeps the [[offspring]] inside until [[birth]].{| class="wikitable"|-|[[File:ReproductiveSystemCervix.png|center|400px]]|-| style="height:20px; width:400px; text-align:center;" |A diagram of the '''female reproductive system'''.|}