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← Human Body & HealthWhy does heatstroke, rather than fever, cause cognitive impairment, despite both conditions elevating core body temperature?
A)Hypothalamic set point is downregulated
B)Metabolic rate increases uncontrollably
C)Thermoregulation mechanism becomes dysfunctional✓
D)Peripheral vasoconstriction fully compensates
💡 Explanation
In heatstroke, the thermoregulation mechanism involving sweating and vasodilation fails due to environmental heat overload, because the hypothalamus loses control. Therefore, core temperature rises uncontrollably, damaging tissues and causing cognitive impairment, rather than the regulated response seen in fever.
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