How can oestrogen be used as a method of contraception?
If taken every day to keep the level of it permanently high, it inhibits the production of FSH and egg development and production stop
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How can progesterone be used as a method of contraception?
It stimulates the production of thick mucus which prevents any sperm getting through and reaching an egg
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The pill
An oral contraceptive containing oestrogen and progesterone. 99% effective but can cause side effects like headaches and nausea
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IUD
Inserted into the uterus to kill sperm and prevent implantation of a fertilised egg
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Condoms
Prevent the sperm entering the vagina. Only form of contraception that will protect against STD's
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Sterilisation
Involves cutting or tying the fallopian tubes in a female, or the sperm duct in a male. This is a permanent procedure
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How can hormones be used to increase fertility?
FSH and LH can be given to women in a fertility drug to stimulate ovulation
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IVF
An egg is removed from woman's ovaries and fertilised with sperm in a lab. The fertilised egg, called an embryo, is then returned to the woman's womb to grow and develop. FSH and LH are given before egg collection to stimulate lots of eggs to mature
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Pros of IVF
Fertility treatment can give an infertile couple a child
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Cons of IVF
Multiple births can happen if more than one embryo grows into a baby. The success rate of IVF is low and can be emotionally and physically stressful
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Other cards in this set
Card 2
Front
How can progesterone be used as a method of contraception?
Back
It stimulates the production of thick mucus which prevents any sperm getting through and reaching an egg
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