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← Nature & AnimalsWhich physiological response helps maintain core temperature when a mammal's subcutaneous fat provides insufficient insulation in -20°C conditions?
A)Skeletal muscles initiate shivering thermogenesis✓
B)Peripheral vasodilation reduces heat dissipation
C)Increased exocrine sweat gland secretion
D)Epinephrine decreases glycogen synthesis
💡 Explanation
Shivering thermogenesis causes muscles to rapidly contract, which dissipates energy into heat, because ATP hydrolysis increases metabolic rate; therefore the body warms itself, rather than vasodilating or sweating which would lose heat.
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