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← Human Body & HealthIf an individual experiences a sudden drop in blood volume due to hemorrhage, which physiological consequence occurs?
A)Increased vagal nerve stimulation
B)Enhanced atrial natriuretic peptide secretion
C)Decreased baroreceptor firing rate✓
D)Elevated parasympathetic nervous activity
💡 Explanation
A decrease in blood volume lowers blood pressure; therefore, baroreceptors detect this drop and reduce their firing rate, because this triggers compensatory mechanisms to increase blood pressure. Decreased firing causes increased sympathetic activity rather than parasympathetic changes.
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