Menstrual

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Menstrual

  1. 1. Menstrual Cycle
  2. 2. Hormones involved <ul><li>Follicle Stimulating Hormone (FSH) </li></ul><ul><li>Luteinising Hormones (LH) </li></ul><ul><li>Oestrogen </li></ul><ul><li>Progesterone </li></ul>Produced by pituitary gland By follicle cells in ovary By corpus luteum
  3. 3. <ul><li>Follicle Stimulating </li></ul><ul><li>Hormone (FSH) </li></ul><ul><li>Luteinising Hormones (LH) </li></ul><ul><li>Oestrogen </li></ul><ul><li>Progesterone </li></ul>Stimulates development of follicles Stimulates ovulation , development of corpus luteum, secretion of progesterone Stimulates growth of follicles, FSH and LH Stimulates thickening of endometrium, inhibits LH and FSH
  4. 6. DAY 0-7 <ul><li>FSH & LH - development of follicle </li></ul><ul><li>Follicles secretes oestrogen </li></ul><ul><li>- repair and growth of uterus </li></ul><ul><li>- dvlpmnt of follicle </li></ul>
  5. 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
  6. 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
  7. 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
  8. 10. But if fertilisation occurs, corpus luteum continues progesterone & oestrogen up to 2-3 months Endometrium continues to nourish embryo
  9. 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
  10. 12. OVULATION PROCESS
  11. 13. Menopause

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