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← Nature & AnimalsWhich phenomenon abruptly ends hibernation from peripheral vasodilation?
A)Increased metabolic cellular heat production✓
B)Decreased internal thoracic air temperature
C)Elevated circulating pancreatic glucagon levels
D)Reduced secretion rate of melatonin
💡 Explanation
Metabolic heating mechanisms increase body temperature because brown adipose tissue initiates non-shivering thermogenesis, therefore ending hibernation rather than external warming; ambient temperature is also low. Re-warming cycles via this process depend on mitochondrial uncoupling.
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