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← Nature & AnimalsWhich thermoregulatory consequence arises when a mammal's skin temperature drops substantially in frigid conditions?
A)Increased blood flow to extremities
B)Activation of shivering thermogenesis
C)Profound vasoconstriction throughout dermis✓
D)Reduced overall metabolic rate slowly
💡 Explanation
Vasoconstriction causes reduced blood flow, minimizing heat loss to the peripheral skin rather than vasodilation. This occurs because heat is retained by minimizing conductive heat loss, therefore preventing hypothermia over the short-term, rather than shivering which demands much energy.
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