![Hormones involved ,[object Object],[object Object],[object Object],[object Object],Produced by pituitary gland By follicle cells in ovary By corpus luteum](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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- 7. FSH, LH (follicles) Oestrogen (uterine) DAY 0-7 Day 8-14 Oestrogen : Stimulates GnRH, FSH, LH LH : 1 o oocytes --> 2 o oocytes OVULATION Corpus luteum formed
- 8. Day 15-21 MORE Progesterone by corpus luteum Uterine wall thicker & more vascular for implantation Inhibition of LH & FSH FSH, LH (follicles) Oestrogen (uterine) DAY 0-7 DAY 8-14 Increase in oestrogen: FSH & LH increase OVULATION
- 9. DAY 22-28 No fertilisation -> corpus luteum disintegrate Oestrogen & progesterone drops Endometrium breaks down Menstrual flow FSH, LH (follicles) Oestrogen (uterine) DAY 0-7 DAY 8-14 Increase in oestrogen: FSH & LH increase OVULATION Day 15-21 MORE Progesterone Uterine wall X LH & FSH
- 10. But if fertilisation occurs, corpus luteum continues progesterone & oestrogen up to 2-3 months Endometrium continues to nourish embryo
- 11. Day 15-21 MORE Progesterone by corpus luteum Uterine wall implantation Inhibition of LH & FSH FSH, LH (follicles) Oestrogen (uterine) DAY 0-7 DAY 8-14 Increase in oestrogen: FSH & LH increase OVULATION DAY 22-28 No fertilisation -> corpus luteum disintegrate Oestrogen & progesterone drops Menstrual flow fertilisation occurs , corpus luteum : progesterone & oestrogen (2-3 months) OR
- 13. Menopause