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← Human Body & HealthWhich cardiovascular effect arises from reduced systemic vascular resistance?
A)Decreased mean arterial pressure, therefore.✓
B)Increased cardiac muscle contractility
C)Elevated venous return to heart
D)Significant rise in blood viscosity
💡 Explanation
Decreased vascular resistance lowers afterload because Ohm's Law causes decreased driving pressure. Mean arterial pressure falls on vasodilation; therefore, pressure drops throughout the systemic circuit, rather than directly causing other adaptations in cardiac function.
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