Female Sex Hormones By the end of the lesson you should be able to: 1. Say 2 effects of female sex hormones, and say where the hormones are made. 2. Describe and explain the roles of Oestrogen, FSH and LH
Dec 23, 2015
Female Sex Hormones
By the end of the lesson you should be able to:
1. Say 2 effects of female sex hormones, and say where the hormones are made.
2. Describe and explain the roles of Oestrogen, FSH and LH
Can you remember the parts of the female reproductive system?
The Menstrual Cycle
What happens during the cycle?
Menstruation Ovulation Lining of the
Uterus Fertilisation?
Hormones
The monthly release of an egg from a woman’s 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.
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
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
Controlling fertility?
Some women are infertile
Some women do not want to be fertile
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
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.
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?