Controlling fertility (Edexcel GCSE Biology Combined Science): Flashcards
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Number of embryos inserted in IVF
Number of embryos inserted in IVF
1 or 2
Hormones given before IVF egg collection
Hormones given before IVF egg collection
FSH and LH
Clomiphene's effect on body
Clomiphene's effect on body
Stimulates body to release more FSH/LH
IVF success rate (%)
IVF success rate (%)
26%
Hormones in mixed contraceptive pill
Hormones in mixed contraceptive pill
Oestrogen and progesterone
How mixed pill prevents egg maturation
How mixed pill prevents egg maturation
Oestrogen inhibits FSH
Duration of contraceptive patch
Duration of contraceptive patch
One week
Duration of contraceptive implant
Duration of contraceptive implant
Three years
Effectiveness of spermicides (%)
Effectiveness of spermicides (%)
70% to 80%
Extra benefit of condoms vs hormonal methods
Extra benefit of condoms vs hormonal methods
Prevent STIs