SharpkopLife Sciences P1 · Human reproduction
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Hormone levels in a healthy woman over one menstrual cycle:
Day 4: oestrogen 55 pg/mℓ, progesterone 0,23 ng/mℓ
Day 8: oestrogen 70 pg/mℓ, progesterone 0,03 ng/mℓ
Day 10: oestrogen 280 pg/mℓ, progesterone 0,03 ng/mℓ
Day 12: oestrogen 300 pg/mℓ, progesterone 0,03 ng/mℓ
Day 14: oestrogen 140 pg/mℓ, progesterone 3,0 ng/mℓ
Day 16: oestrogen 110 pg/mℓ, progesterone 12,5 ng/mℓ
Day 20: oestrogen 80 pg/mℓ, progesterone 15,0 ng/mℓ
Day 24: oestrogen 70 pg/mℓ, progesterone 5,0 ng/mℓ
Day 28: oestrogen 65 pg/mℓ, progesterone 0,8 ng/mℓ
2.2.32 marks
In the previous part, you were asked what happens to the uterine lining at the end of the cycle (days 24 to 28). Using figures from the table, give a reason for that outcome by linking the hormone trend to the events in the pituitary gland.
NSCBased on Nov 2024 · Paper 1 · Q2.2.3
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