When ==Key Stage 3=====Meaning==='''Ovulation''' is when an [[Ovum|egg cellovum]] is released from an [[ovary]]. ===About Ovulation===: The [[ovum]] rolls along the edge of the [[oviduct]] swept along by [[cilia]] following [[ovulation]].: '''Ovulation''' takes place on the 14th day of the [[Menstrual Cycle|menstrual cycle]]. ==Key Stage 4=====Meaning==='''Ovulation''' is when an [[ovum]] is released by a [[follicle]] in the [[ovary]]. ===About Ovulation===: Prior to '''ovulation''' [[Follicle Stimulating Hormone|follicle stimulating hormone]] causes the [[follicle]]s to grow and the [[ovum]] to mature.: '''Ovulation''' is triggered by a sudden increase in [[Luteinising Hormone|luteinising hormone]] around the 14th day of the [[Menstrual Cycle|menstrual cycle]] which causes the [[ovum]] to be released from a [[follicle]].: Following '''ovulation''' the [[ovum]] rolls along the edge of the [[oviduct]] swept along by [[cilia]]. {| class="wikitable"|-|[[File:MenstrualCycleGraph2.png|center|500px]]|-| style="height:20px; width:500px; text-align:left;" |A [[graph]] showing changes during the [[Menstrual Cycle|menstrual cycle]] including '''ovulation'''. The [[graph]] notes:: The stages of [[follicle]] growth and [[ovulation]].: The [[Body Temperature|body temperature]].: The [[hormone]] levels.: The relative thickness of the [[Uterus|uterine wall]].|}