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 Form 3 Biology questions and answers on reproduction in animals

Describe the role or each of the following hormones in the human menstrual cycle
(i) Oestrogen
(ii) Progesterone
(iii) Luteinising hormone

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Answer Text:
i)• Oestrogen causes repair/healing of uterine wall
• Oestrogen stimulates anterior lobe of pituitary to produce luteinising hormone (LH)
ii)• Progesterone causes proliferation/thickening of uterine wall
iii) LH causes ovulation. It also causes graafian follicle to change into corpus luteum. LH stimulates corpus luteum to secrete progesterone


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