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en.wikipedia.org/wiki/Venous_blood

Venous blood is deoxygenated blood which travels from the peripheral vessels, through the ... The difference in the oxygen content of arterial blood and venous blood is known as the arteriovenous oxygen difference. ... Human blood is red in color, ranging from bright red when oxygenated to a very dark, almost blackish- red ...

scienceblogs.com/scientificactivist/2008/04/17/why-are-veins-blue

Apr 17, 2008 ... The bright red color of arterial blood stems from a complex that's formed ... is largely depleted of oxygen, it is never blue: it's more of a deep maroon color. ... light of all wavelengths will be reflected before it can interact with the blood. ... In fact, about two-thirds of your blood volume is held in your veins at any ...

mentalfloss.com/article/24249/if-blood-red-why-do-veins-look-blue

Mar 19, 2010 ... If you wonder why you've never seen blue blood before, someone might tell you ... Color. White, Black, Red, Green, Blue, Yellow, Magenta, Cyan ... in our red blood cells -- binds to the oxygen the blood just picked up. ... When you look down at the veins in your arm, light of different wavelengths is hitting the ...

wonderopolis.org/wonder/if-blood-is-red-why-are-veins-blue

How long does it take your heart to pump blood throughout your entire body? ... With each new breath, oxygen enters the lungs and restores the blood before it is pumped back out to the ... The colors we see are the result of which wavelengths of light are reflected back to .... when your blue blood touches the air it turns red.

scienceline.ucsb.edu/getkey.php?key=3964

Apr 26, 2013 ... The myth is that... that blood is red when it is filled with oxygen and blue ... the body and then delivers this oxygen where it is needed before making the ... The oxygen dissolves in your blood, binding to the red blood cells.

gregladen.com/blog/2010/09/01/is-blood-ever-blue-science-tea-2

Sep 1, 2010 ... Before I retired from teaching middle school science, kids would always tell me, “ my teacher said you ... So, when your blood is drawn, and it looks red; it still hasnt event hit O2 yet. ..... I think blood is blue colour without oxygen.

www.healthline.com/health/is-blood-blue

Feb 2, 2017 ... But that's not an indication of the color of the blood inside your veins. ... the body and oxygen is removed by tissue, the blood grows darker. ... However, your body is a well-tuned machine that will give you many signals before ...

www.npr.org/sections/13.7/2017/02/03/513003105/why-do-many-think-human-blood-is-sometimes-blue

Feb 3, 2017 ... Blood does change color somewhat as oxygen is absorbed and ... (I think this also explains why your lips look blue when you get cold.) ...

www.askabiologist.org.uk/answers/viewtopic.php?id=2043

I recently had a discussion in my biology class on what color blood is. ... no since if blood is blue is that when you have blood drawn directly from your veins into a vaccuum, the blood is still red, and it never touches oxygen.

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