5.3 Hormonal coordination in humans

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Question 22
Medium

Table 1 gives information about three different methods of contraception.

Table 1

Method of contraceptionNumber of pregnancies per 100 women in one yearFeatures and possible side effects
Combined oral pill9.0Must be taken daily; contains oestrogen and progesterone; can reduce menstrual pain and flow.
Intrauterine system (IUS)0.2Lasts for 5 years; releases progesterone; can cause temporary breast tenderness or acne.
Copper IUD0.8Lasts for up to 10 years; does not contain hormones; can make periods heavier and more painful.

A woman is choosing a contraceptive method. She wants a method that:

  • has a very low pregnancy rate (fewer than 1.0 pregnancy per 100 women per year)
  • does not make her periods heavier or more painful
  • does not require daily memory or preparation immediately before sex
a.

Identify which method of contraception from Table 1 best meets all of her requirements.

[1]
b.

Suggest two disadvantages of the chosen method, using information from Table 1 and your own knowledge.

[5]

5.3 Hormonal coordination in humans Questions

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