A passenger remains in a crowded railway carriage in which the ventilation has stopped. The air temperature is 31 ∘C31\,^\circ\mathrm{C}31∘C and the passenger's skin temperature is 34 ∘C34\,^\circ\mathrm{C}34∘C. The passenger's core body temperature increases above its normal range.
Explain how thermoregulation returns the passenger's core body temperature towards the normal range.
78 exam-style questions on Edexcel GCSE Biology 7.3 Homeostasis and thermoregulation, covering 7.3.1 Importance of a constant internal environment, 7.3.2 Importance of homeostasis, 7.3.3a Thermoregulation via the skin and hypothalamus, and 7.3.3b Vasoconstriction and vasodilation in thermoregulation. Each one has a worked solution and a mark scheme showing where the marks go.