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    BMAT 2010 S2

    BMAT 2010 S2

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    This section is Section 2 of 3.

    Speed as well as accuracy is important in this section. Work quickly, or you might not finish the paper. There are no penalties for incorrect responses, only marks for correct answers, so you should attempt all 27 questions. Each question is worth one mark.

    You must complete the answers within the time limit. Calculators are NOT permitted.

    Good Luck!

    Which row of the table correctly describes what happens when body temperature rises in a human?

    1.
    • 3
    0

    Explanation

    The correct answer is E.

    Temperature change is detected by the thermoregulatory centre in the hypothalamus. The thermoregulatory centre activates a response, in which: the arterioles dilate, hair erector muscles relax – be careful, the capillaries themselves do not move. However, dilation of the arterioles supplying blood to the skin capillaries, causes more warm blood to flow near the surface of the skin, hence heat is lost by radiation.

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