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← Nature & AnimalsWhich outcome occurs when a mammal's body temperature drops sharply during cold exposure?
A)Increased metabolic heat through shivering thermogenesis✓
B)Decreased peripheral blood flow via vasoconstriction
C)Reduced thermal gradient toward equilibrium with environment
D)Elevated glucose uptake from pancreatic stimulation
💡 Explanation
When body temperature declines, shivering thermogenesis is triggered via muscle contractions because hypothalamic thermoreceptors detect the drop in core temperature, generating metabolic heat. Therefore metabolic heat increases via shivering, rather than reduced blood flow, lesser thermal gradient or elevated glucose changes, which represent different physiological and hormonal processes.
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