blood pressure

[aspiringmd1015]

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kind of a stupid question i guess but here goes, so i was listening to what conrad fischer says, and from my own previous knowledge that naturally dilating an arteriole increases the blood pressure because it forces more volume of blood into the larger arteries, which if the diameter stays the same the blood pressure would increase(conrad fischer also says this word for word) but as he was saying this i realized doesnt flow of blood go from the larger arteries TO arterioles? so how would dilating an arteriole lead to increased pressure then?

 

[Jlaw]

Maybe he is referring to response to exercise where you have dilation of the capillary beds as blood is shunted to skin for cooling and muscles for metabolism but BP increases due to increased HR? All else being equal then dilating anything downstream of the larger arteries is going to lower BP so there must be something else that this is qualified on.

 

[aspiringmd1015]

I thought capillaries cant dilate bc they dont have the muscular wall(tunica media) but regardless how do arterioles feed into arteries? i thought it was the otherway around, artery-arterioes-metaarterioles-capillaries-venules-vein? I read somehwere something about upstream arterioles? does that have anything to do with it?

 

[Transposony]

I think maybe CF is trying to say is that more blood is going downstream thereby increasing the venous return.