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What is the role of progesterone in the menstrual cycle?
Produced by the ovary by the remains of the follicle. Maintains the lining of the uterus. When the level of progesterone falls the lining of the uteru...
Where is testosterone produced?
In the testes.
How does the contraception pill work?
Contains oestrogen and progesterone. Taking oestrogen every day prevents the release of an egg by inhibiting FSH. Progesterone reduces fertility by st...
What are the side effects of the pill?
Headaches and nausea. Still contract STIs.
What is the contraceptive patch?
Contains same hormones as the pill. Patch is stuck under the skin (5cm x 5cm). Each patch lasts a week.
What is the contraceptive implant/injection?
Implant is inserted under the skin. Releases progesterone. Can last for 3 years. Injection lasts less time 2-3 months.
What is an intrauterine device?
Is a T shaped device that is inserted into the uterus to kill sperm and prevent implantation of the fertilised egg.
Name three barrier methods, non hormonal methods of contraception.
Male and female condom, diaphragm, spermicide
What is the diaphragm?
A plastic cup that fits over the cervix (opening to the womb) to form a barrier.
How does spermicide work?
It kills or disables the sperm.
Name a permanent ways to avoid pregnancy.
Abstinence (not having sex), sterilisation which is having Fallopian tubes or sperm duct cut.
How does IVF work to help infertile couples?
FSH and LH are given to a woman to help eggs mature and release. Eggs are then collected from a woman's ovaries. The eggs are fertilised in a lab with...
What are the pros and cons of IVF?
PRO: Gives an infertile couple a child.CON: Multiple births, these are risky, more chance of still birth and miscarriage.CON: Success rate is lowCON:...
What are the ethical concerns linked to IVF?
IVF leads to unused embryos which are destroyed or used for medical research. (Potential life).Genetic testing could be carried out on the embryo whic...
What is the sclera?
The tough supporting wall of the eye
What is the cornea?
Outer transparent layer, bends/refracts light into the eye
