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"Blood is actually blue!" (lemmy.dbzer0.com)

submitted 4 months ago by Stamets@lemmy.dbzer0.com to c/whitepeopletwitter@sh.itjust.works

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[–] MoonMelon@lemmy.ml 21 points 4 months ago* (1 child)

Deoxygenated, venous blood is dark red. Oxygenated, arterial blood is bright red.

I was taught the "blood is blue" myth also. My mom was livid, since her job involved drawing lots of blood, starting IVs etc.

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[–] teyrnon@sh.itjust.works 2 points 4 months ago

I called bullshit from the start on that. If it was true, that blood turned red when it touched oxygen, then pulling blood from the vein in a needle would be blue. Teachers told me to shut up.

It's such a stupid theory, knowing what we knew.

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