Edexcel IGCSE Biology · Spec 3.9-3.10B
The Menstrual Cycle (Triple)
The hormones that control the menstrual cycle — FSH, LH, oestrogen and progesterone.
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The Menstrual Cycle (Triple)
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Spec 3.9-3.10B
What you need to know
- Describe the events of the menstrual cycle
- Explain the roles of the hormones FSH and LH
- Explain the roles of oestrogen and progesterone
Active recall
Quick check
Answer each question before opening the answer.
What are the roles of oestrogen and progesterone in the cycle?
Oestrogen repairs and thickens the uterus lining and triggers LH; progesterone maintains the lining.
What do FSH and LH do?
FSH causes an egg to mature and stimulates oestrogen; LH triggers ovulation.
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