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Nature & Animals

Which outcome occurs when a hibernating mammal experiences a transient temperature rise?

A)Enhanced vasodilation for rapid heat loss
B)Increased brown fat metabolism and heat generation
C)Suppressed shivering thermogenesis to conserve energy
D)Decreased heart rate and lowered oxygen consumption

💡 Explanation

When a hibernating mammal's temperature rises, vasodilation in peripheral tissues occurs because blood vessels widen, increasing blood flow to the skin surface and thus facilitating faster heat dissipation through convection. Therefore, enhanced vasodilation results, rather than increased brown fat metabolism suppression of shivering, or decreased heart rate which are mechanisms used during deep hibernation.

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