Hormones, the menstral cycle

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  • HORMONES The Menstrual Cycle
    • PROESTERONE
      • Stimulates the growth of blood vessels, Lining of the uterus
        • Preparation for pregnancy
      • Helps keep pregnancy going if a fertilised ovum arrives in the uterus
    • LH (luteinising hormone)
      • Stimulates the release of a mature egg from the ovary
      • Stimulates the ovary to make progesterone
    • OESTROGEN
      • Stimulates the lining of the uterus to build up
      • Reduces the levels of FSH
        • Produced by the pituitary gland
          • Increases levels of LH
    • Testosterone
      • NO EFFECT
    • FSH (follicle stimulating hormone)
      • Made in pituitary gland
      • Stimulates the release of a mature egg from the ovary
        • Produced on ovulation day
      • Stimulates the ovary to make oestrogen

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