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Date May 2015 Marks available 1 Reference code 15M.1.HL.TZ2.34
Level Higher level Paper Paper 1 Time zone Time zone 2
Command term Outline Question number 34 Adapted from N/A

Question

What happens when human body temperature rises during exercise?

A. The arterioles move closer to the skin.
B. The hypothalamus decreases cell respiration.
C. The skin capillaries close up.
D. The water from sweat evaporates to cool the body.

Markscheme

D

Examiners report

Many candidates wrongly believed that arterioles move in the body instead of suffering vasodilation. Nevertheless, most candidates had the right answer, proving this question to be too easy.

Syllabus sections

Core » Topic 6: Human physiology » 6.6 Hormones, homeostasis and reproduction
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