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2 marksCoordination and Control

CSEC Human and Social Biology · January 2011 · Paper 2 · Question 2(d)(i)

Paul's thyroid gland produces insufficient thyroxine compared to his twin Paula.

Suggest how Paul's insufficient thyroxine production would affect his physical and mental development.

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Other parts of this question

  1. 2(a)Complete the statement describing the components of the human nervous system using the words: motor, sensory, central, spinal, peripheral.[3 marks]
  2. 2(b)(i)Suggest the region of the brain that may have been damaged in Melissa.[1 mark]
  3. 2(b)(ii)Suggest the region of the brain that may have been damaged in Melissa's father.[1 mark]
  4. 2(c)(i)Write X on Figure 1 to show the hypothalamus.[1 mark]
  5. 2(c)(ii)Suggest ONE way bodily functions may be affected by a malfunctioning hypothalamus.[1 mark]
  6. 2(d)(ii)Identify ONE effect of an overactive thyroid gland on a human adult.[1 mark]

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