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← Nature & AnimalsWhich process reduces core body temperature during mammalian exercise in a hot environment?
A)Cutaneous vasodilation increasing heat radiation✓
B)Metabolic rate decreasing glycogen utilization
C)Renal vasoconstriction reducing urine volume
D)Hormonal imbalance impairing sodium regulation
💡 Explanation
Under increased heat load from exercise, cutaneous vasodilation occurs to increase blood flow near skin surface allowing heat loss through radiation because of the greater temperature differential compared to less vasodilation. Therefore peripheral vasodilation reduces core temperature, rather than reduced glycogen usage lowering metabolic demand which would also decrease performance.
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