If the forearm is tightened with a belt and the blood path is passed, from which side will the veins swell

If the forearm is tightened with a belt and the blood path is passed, from which side will the veins swell: from the side of the shoulder or from the side of the hand? Is it possible in this way to find out where the blood is moving?

if the forearms are tightened with a belt, the veins will swell from the side of the hand because blood will flow into the arm, but will not come out. And it is impossible to know where the blood is moving, since we have two circuits.



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