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Nature & Animals

Which physiological consequence occurs when a mammal with seasonal hibernation initiates vasodilation in brown adipose tissue upon rewarming?

A)Reduced heat dissipation throughout core
B)Increased oxygen delivery for thermogenesis
C)Decreased glucose uptake into fat cells
D)Impaired lipid metabolism within tissue

💡 Explanation

When vasodilation occurs in brown adipose tissue during rewarming, blood flow increases because vasculature relaxes, facilitating oxygen delivery crucial for oxidative phosphorylation within mitochondria enhancing heat production. Therefore increased oxygen delivery results, rather than heat reduction, impaired glucose update or lipid metabolism which decrease thermogenesis.

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