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CSEC Human and Social Biology · January 2010 · Paper 2 · Question 4(a)

Figure 3 shows a simplified diagram of the human circulatory system.

Name the blood vessels labelled A, B, and C in Figure 3.

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Other parts of this question

  1. 4(b)Explain why humans need a circulatory system to transport oxygen, while single-celled organisms like amoeba do not.[2 marks]
  2. 4(c)Explain how an iron deficiency affects the transport of oxygen by red blood cells.[4 marks]
  3. 4(d)Suggest ONE sign or symptom which may result from a deficiency of iron.[1 mark]

More practice: the rest of this paper · more The Circulatory and Lymphatic Systems questions · all CSEC Human and Social Biology past papers