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← Nature & AnimalsWhich outcome occurs when a marine mammal's deep dive triggers bradycardia and peripheral vasoconstriction besides the diving reflex?
A)Prolonged oxygen reserves for vital organs✓
B)Increased lactic muscle acid buildup
C)Enhanced buoyancy and reduced energy
D)Improved thermal heat exchange rates
💡 Explanation
When marine mammals dive, peripheral vasoconstriction occurs because blood flow is reduced to extremities, prioritizing oxygen delivery to vital organs like the brain and heart via redistribution. Therefore, oxygen reserves get prolonged, rather than muscle acidosis, better buoyancy, or efficient thermal exchange which counteracts heat loss prevention.
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