Hormonal Coordination in Humans 2


  • 1) The graph below shows how the levels of various hormones change over the course of the 28 days of a menstrual cycle. Describe the patterns shown in the levels of LH (luteinising hormone) and FSH (follicle stimulating hormone), and explain these in terms of the changes observed in the egg 4 Marks



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  • 2) Women can take a prescribed drug known as ‘the combined pill’ in order to control their menstrual cycle and reduce the risk of pregnancy. Which hormones does the combined pill contain, and how does it alter the normal menstrual cycle? 2 Marks


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  • 3) The table below shows the success rates of some other contraceptive methods. Using the information in the table below, and your own knowledge, evaluate the methods of contraception 6 Marks



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  • 4) If a woman has an abnormal balance of hormones, she may struggle to get pregnant naturally. Many women therefore turn to fertility treatments. Outline the process of In Vitro Fertilisation (IVF) treatment 4 Marks


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  • 5) Unfortunately, there are many disadvantages to IVF treatment, such as it being expensive and having low success rates. Why else might a doctor advise against giving IVF treatment, in order to protect a woman’s health? 1 Marks


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