Question:
In a normal human female, why does menstruation only occur if the released ovum is not fertilised? Explain.
In a normal human female, why does menstruation only occur if the released ovum is not fertilised? Explain.
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The degeneration of the corpus luteum after unfertilized cycles leads to menstruation, resetting the reproductive system.
Updated On: Jan 13, 2026
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Solution and Explanation
- If the ovum is not fertilised, the corpus luteum degenerates, leading to a drop in progesterone levels.
- This drop causes the breakdown of the thickened uterine lining, resulting in its shedding as menstrual blood.
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