The artificial control of fertility

L.O: To evaluate the use of hormones to control fertility & IVF

http://www.bbc.co.uk/schools/gcsebitesize/science/aqa/nervesandhormones/controlinthehumanbodyact.shtml

Everyone has the right to have a child and be a

parent??

Write down a list of reasons for and against this

statement

Controlling PregnancyRound Table

Discuss why women may have difficulty becoming pregnant

• Use ideas from previous lessons and brainstorm any new ideas

• Think about each step in the process of becoming pregnant

Controlling PregnancySome Ideas

Women May Want To Have Children But Cannot Because...

• Low FSH• Too High Oestrogen• Poor Egg Quality• Male Partner with poor sperm quality

WHAT IS FERTILITY TREATMENT?

• Fertility treatment is used for those couples or individuals who cannot conceive a child naturally.

Artificial Insemination – This is when sperm is collected and placed into the mothers uterus using artificial methods. This is to increase the chance of the mothers egg being fertilised by the sperm and therefore a baby being created.

Artificial Insemination takes place in 2 ways:1 – The sperm will come from the husband/partner.2 – If the husband/partner has unhealthy sperm or the woman doesn’t have a male partner then the sperm will come from a donor who is anonymous.

‘My daughter is getting married soon and she has gone on the pill. How does it work, and can she really rely on it?’ - Mary

‘If the pill is so good, why doesn’t everyone use it so we can really control world population?’ - Steve

‘I have been trying to get pregnant for a while now and my doctor has suggested using fertility drugs. What are they and how do they work?’ - Susie

‘What about all these women in their 50s and 60s who are using IVF to get pregnant. Is this a good use of fertility treatment?’ - Clyde

Self-assessment questions

Grade C/D1. Describe two effects of FSH

Grade B-A2. Describe how concentrations of oestrogen in

the blood change during the menstrual cycle, and the effects that these changes have.

Self Assessment: AnswersQ1. it makes eggs mature in the ovaries (D), and it makes the

ovaries secrete oestrogen (C)

Q2. Oestrogen levels rise during the first half of the cycle (B), causing the lining of the uterus to build up (A). They fall during the last part of the cycle (B), and the uterus lining breaks down when oestrogen is at its lowest at the start of the next cycle (A).

Grade yourself – and justify that grade.THEN - set yourself a target that tells you HOW to get the next

grade

Self-assessment questions

Grade D/C1. State one advantage of oral contraceptives

and one possible disadvantage.

Grade B-A*2. Suggest why fertility treatment using FSH

often result in multiple births.

Self Assessment: AnswersQ1: Advantages: fewer unwanted pregnancies; fewer abortions;

slower population growth.Disadvantages: could encourage more sexual partners; could

increase spread of sexually transmitted diseases.One reason for each = D two or more = CQ2: FSH can bring more than one egg to maturity each month

(B), so more than one can be fertilised (A), causing multiple embryos to develop (A*).

Grade yourself – and justify that grade.THEN - set yourself a target that tells you HOW to get the next

grade