A tool by Leon Dudhill
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Hormones
  • FSHFrom pituitary. Stimulates egg maturation in ovaries. Stimulates oestrogen production.
  • OestrogenFrom ovaries. Repairs uterus lining. Inhibits FSH. Stimulates LH surge.
  • LHFrom pituitary. Surge triggers ovulation (egg release) around day 14.
  • ProgesteroneFrom corpus luteum. Maintains uterus lining after ovulation. Inhibits FSH and LH.
Cycle summary
1
Days 1–5: Menstruation — lining breaks down
2
Days 1–13: FSH → egg matures, oestrogen rises
3
Days 5–13: Oestrogen repairs uterus lining
4
Day ~14: LH surge → ovulation
5
Days 14–28: Progesterone maintains lining
6
Day 28: If no fertilisation → progesterone falls → menstruation
Question types
Multiple Choice Typed Answer
Multiple Choice
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6 seconds per question
Score
Correct / Total
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Accuracy
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Session Streak
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FSH (pituitary) → matures egg, stimulates oestrogen.

Oestrogen (ovaries) → repairs lining, inhibits FSH, triggers LH surge.

LH (pituitary) → surge causes ovulation ~day 14.

Progesterone (corpus luteum) → maintains lining after ovulation, inhibits FSH & LH.