Stamets@lemmy.dbzer0.com to People Twitter@sh.itjust.works · 7 days ago"Blood is actually blue!"lemmy.dbzer0.comimagemessage-square104linkfedilinkarrow-up1783arrow-down110
arrow-up1773arrow-down1image"Blood is actually blue!"lemmy.dbzer0.comStamets@lemmy.dbzer0.com to People Twitter@sh.itjust.works · 7 days agomessage-square104linkfedilink
minus-squareMoonMelon@lemmy.mllinkfedilinkEnglisharrow-up15·7 days agoDeoxygenated, 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.
minus-squareteyrnon@sh.itjust.workslinkfedilinkarrow-up2·6 days agoI 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.
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.
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.