Is blood blue or red

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Added: 16.10.2019

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David Irving does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment. Send your question to alwayswondered theconversation. Blood is red, and a surgeon will tell you our veins too are red, they only look blue when we see them through our skin. But why?

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Is blood actually blue?

Why Do Many Mistakenly Think Human Blood Is Sometimes Blue? : Cosmos And Culture : NPR

Whether it is a skinned knee, a pierced ear or a small cut, we all get to see a little bit of our blood from time to time. Have you ever wondered why? To help us get to the bottom of the mystery, we turn to our friends at Wonderopolis. Before we can get to answering this colorful question, we should first understand the role of veins in our body. This network runs blood throughout the body from the heart through your arteries and capillaries and finally through your veins which the final stage before the journey begins again.

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Blood In Your Veins Is Always Red, Not Blue

All rights reserved. The Antarctic octopus, pictured, has a copper-rich protein in its blood that turns the vital fluid blue. Society elites aren't the only blue bloods. Several species of octopus have blue, rather than red, fluid running through their veins. The blue comes from a copper-rich protein called hemocyanin, which carries oxygen from the lungs to the bloodstream and then to the cells of the octopus's body.