Why are the arteries and veins connected by the capillaries? If veins carry de-oxygenated blood and arteries carry oxygenated blood, why are they connected?

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Answer 1 · 2018-03-22T21:19:34

You need a return path to the heart/lung system: this is a closed loop .

Veins and arteries are just nomenclature:one carries oxygenated blood the other de-oxygenated to various end points of the body.

You need a return path to the heart/lung system: this is a closed loop .