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en.wikipedia.org/wiki/Venous_blood

Venous blood is deoxygenated blood which travels from the peripheral vessels, through the ... Human blood is red in color, ranging from bright red when oxygenated to a very dark, almost blackish-red when deoxygenated. It owes its color to ...

en.wikipedia.org/wiki/Blood

Blood is a body fluid in humans and other animals that delivers necessary substances such as ..... Capillary blood from a bleeding finger. Hemoglobin is the principal determinant of the color of blood in vertebrates. Each molecule has four heme ...

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

I recently had a discussion in my biology class on what color blood is.Most of my class, including my biology teacher, were saying that blood is ...

www.quora.com/What-is-the-colour-of-human-blood

Well blood is not a single fluid. It is made of many things. It contains different necessary substance such as nutrients and metabolic west from cells. It is delivering ...

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

Feb 3, 2017 ... Human blood is red because hemoglobin, which is carried in the blood and functions to transport oxygen, is iron-rich and red in color.

www.thoughtco.com/is-deoxygenated-human-blood-blue-603874

Jul 14, 2017 ... Human blood does not appear blue under any circumstances. In fact ... Although it changes color when it is oxygenated, hemolymph typically ...

owlcation.com/stem/Blood-Color-in-Humans-and-Animals-Meaning-and-Function

Feb 5, 2017 ... Human blood is a beautiful red color, but the blood of some animals—and of humans under certain conditions—is a different color. The function ...

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

There are three types of blood vessels: arteries, veins, and capillaries. ... The colors we see are the result of which wavelengths of light are reflected back to our eyes. ... Blue light does not penetrate human tissue as deeply as red light does.

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

Feb 2, 2017 ... From your skin's surface, the veins in your body may appear deep blue or even purple. But that's not an indication of the color of the blood ...