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Veins function as blood reservoirs. For example, in hemorrhage accompanied by a drop in arterial blood pressure, sympathetic nerve impulses reflexly stimulate the muscular wall of the veins. The resulting venous constrictions help maintain blood pressure by returning more blood to the heart. This mechanism ensures a nearly normal blood flow even when as much as 25% of blood volume is lost..

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Spleen

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Isingizwe Jolie Gise...

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spleen

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Viens

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The liver

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Q: What is an example of a blood reservoir?
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