Female Sex Hormones

1
Female Sex Hormones

• By the end of the lesson you should be able to
• Say 2 effects of female sex hormones, and say
  where the hormones are made.
• Describe and explain the roles of Oestrogen, FSH
  and LH

2
Can you remember the parts of the female
reproductive system?
3
The Menstrual Cycle

• What happens during the cycle?
• Menstruation
• Ovulation
• Lining of the Uterus
• Fertilisation?

4
Hormones

• The monthly release of an egg from a womans
  ovaries and the changes in the thickness of the
  lining of her womb are controlled by hormones
• The hormones are secreted (released) by the
  pituitary gland and by the ovaries.

5
Which hormones are involved?

• Oestrogen made in the ovaries
• Follicle stimulating hormone (FSH) made in the
  pituitary gland
• Leutinising hormone (LH) made in the pituitary
  gland

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Hormones
Gland Effects
Oestrogen Ovaries Inhibits FSH and stimulates LH in the pituitary. Causes the lining of the womb to thicken
FSH Pituitary Causes eggs to mature in the ovaries. Stimulates the ovaries to make oestrogen
LH Pituitary Causes ovulation
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9
Controlling fertility?

• Some women are infertile
• Some women do not want to be fertile

10
Increasing Fertility

• Women can be given hormones to stimulate the
  release of eggs from the ovaries (fertility
  drugs)
• This fertility drug is FSH which stimulates eggs
  to mature

11
Reducing Fertility

• Oral contraceptive pills contain hormones that
  prevent the release of eggs from the ovaries.
• The Pill contains oestrogen which inhibits FSH
  production, so no eggs mature.

12
The male pill?

• How would it work?
• How would you test it?
• What economic implications would you have to
  think about?
• How would you know its effects?
• How would you come up with a effectiveness?