Why does vasodilation in periphery lead to reduction in blood pressure?

[scilearner]

Hello everyone,

 

Ok generally what do they mean when they say vasodilation in periphery lead to reduction in blood pressure? Do I have to think of this as expanding the size of a fluid filled container so less fluid splashes againts the walls reducing pressure. Or do I have to think of this like a circuit where decreasing the resistane of a resistor results in decreased pressure just upstream of that resistor. Thank you