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===About the Menstrual Cycle===
: The '''menstrual cycle''' in [[Human|humans]] repeats every month.
{| class="wikitable"
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| style="height:20px; width:500px; text-align:center;" |A [[graph]] showing the relative thickness of the [[Uterus|uterine wall]] through the 28 days of the '''menstrual cycle'''.
|}
==Key Stage 4==
===Meaning===
The '''menstrual cycle''' is a regular change in the [[Organ|organs]] of the [[Female Reproductive System|female reproductive system]] that include [[ovulation]] and [[menstruation]] (periods).
===About the Menstrual Cycle===
: The '''menstrual cycle''' is controlled by the [[hormone]]s; [[oestrogen]], [[progesterone]], [[Luteinising Hormone|luteinising hormone]] and [[Follicle Stimulating Hormone|follicle stimulating hormone]].