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1 markExcretion and Homeostasis

CSEC Human and Social Biology · January 2010 · Paper 2 · Question 5(a)(ii)

Figure 4 shows a cross-section through human skin.

Identify the part labelled A in Figure 4.

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Other parts of this question

  1. 5(a)(i)Use a single square bracket ( [ ) on Figure 4 to label EACH of the following layers of the skin: a) D for the dermis, b) E for the epidermis.[2 marks]
  2. 5(b)(i)Explain how Dwight's skin causes this flushed appearance.[2 marks]
  3. 5(b)(ii)Dwight goes to a closed room with a fan to cool down after the game. Why does he take a long time to cool down even though he is sweating?[2 marks]
  4. 5(c)Give TWO examples of how the kidney maintains balance in the human body.[2 marks]
  5. 5(d)Dwight drank a lot of water during the football game. Explain why this excess water did NOT pass out as urine.[1 mark]

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