What happens to blood pressure when arterioles constrict?

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Multiple Choice

What happens to blood pressure when arterioles constrict?

Explanation:
Arterioles are the main site of vascular resistance. When they constrict, resistance to flow increases, so the pressure that the heart has to generate to push blood through the circulation rises. In physiological terms, increasing systemic vascular resistance raises mean arterial pressure. That’s why constriction typically elevates blood pressure overall. The other ideas—pressure decreasing, staying the same, or varying unpredictably—don’t fit the direct consequence of narrowing arterioles, which is an increase in upstream arterial pressure.

Arterioles are the main site of vascular resistance. When they constrict, resistance to flow increases, so the pressure that the heart has to generate to push blood through the circulation rises. In physiological terms, increasing systemic vascular resistance raises mean arterial pressure. That’s why constriction typically elevates blood pressure overall. The other ideas—pressure decreasing, staying the same, or varying unpredictably—don’t fit the direct consequence of narrowing arterioles, which is an increase in upstream arterial pressure.

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