Ovaries release one ovum about every four weeks; the uterus wall thickens to prepare for implantation; if no implantation occurs, the uterus lining breaks down and is passed out.
Æggestokkene frigiver en ægcelle ca. hver fjerde uge, livmodervæggen fortykkes for at forberede implantation; hvis ingen implantation sker, nedbrydes livmodervæggen og udskilles sammen med blod.
| Front | Describe the menstrual cycle. |
|---|---|
| Back | The ovaries will collectively release one ovum about every four weeks. To prepare for this, the uterus wall will thicken to allow implantation. If there is no implantation, the uterus lining breaks down. These cells and the blood going to them are passed out of the vagina. |
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