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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 ...

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 ...

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.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 ...

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

Jul 14, 2017 ... Human blood is red because it contains a large number of red blood cells, ... Methaemoglobin can't transport oxygen and its darker color may ...

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.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...

www.quora.com/What-is-the-true-colour-of-human-blood-It-appears-red-because-of-Oxygen-What-is-its-colour-without-O2

Now this is an interesting question,some people say that it is blue but whosoever ... First of all coming on the red colour of blood you see blood is always red in colour just the thing is that blood with more O2 or we can say ...

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

Sep 1, 2010 ... human blood is red as soon as it is oxygenated. ... This color is 24% red, 2% green, 2% blue, but at a saturation of 92 with a color value of 24 ...