What is the color of human blood while flowing inside the veins?

Question

They say that the color of our blood is not red. It becomes red when exposed to air.

Answer 1

Because it lacks oxygen, the waste-rich blood that flows through the veins has a deep red color, almost like maroon. Because the walls of the veins are rather thin, the waste-rich blood is visible through the skin on some parts of the body. Look at your wrist, or hands, or ankles. You can probably see your veins carrying your blood back to your heart. Your skin refracts light, though, so that deep red color actually appears a little blue from outside the skin.

Answer 2

I work in a level 2 trauma ER, as a phlebotomist. My entire job consists of drawing blood, running tests, and starting IV's. Blood is always red. Always. Veins are blue, so perhaps that's where the strange myth comes from that blood is blue until it's exposed to oxygen. Actually, venous blood is deoxygenated, so it's dark red (perhaps some people mistake this for blue?). Arterial blood is bright red (fire hydrant color) because it is oxygenated.

Answer 3

Blood in veins is a dark maroon color. It looks blue from the outside because of the intervening tissue .... it's NOT actually blue. Blood in the arteries is red, having been oxygenated in the lungs. Arteries are deeper than veins, so you usually can't see them through the skin.

Answer 4

Are there actually people walking this earth that really think blood is blue?????

Your blood is dark red on its way to the lungs and bright red when the lungs add oxygen to it. The veins in your arms may be blue, but they're only vessels to carry blood. It's like saying your brain is brown because your hair is brown.

Answer 5

In the blood vessels going *from* the lungs to the tissue that needs it, the blood is red. In the blood vessels that are going *to* the lungs from the tissue that used it, the blood is typically a purplish color.

And you're right - blood turns red as a result of exposure to oxygen. Which is exactly what happens in your lungs; blood gets oxygen from the lungs (thus turning red) and transports it to the tissues that need it. When the oxygen is absorbed by the tissue it's being transported to, the blood turns purple until it goes through the lungs again.

Answer 6

Alrighty your talking to the person who got an A on this test. Alrighty the color of the blood in veins in purply because it is the blood that needs to go to your heart to be cleaned. The blood in your arteries is red and is coming out of your heart after being re-oxygenized (is that a word, well prolly not but it is now). Wow do I feel smart!

I know I'm lame.

Answer 7

Blood is bright red (oxygenated) or dark red (depleted of oxygen). It can also be brown (dried).

The blue appearance of your veins is the mix of the color of your veins and the darker deoxygenated blood, but the blood itself is not really blue.

-superkid- has it right.

Answer 8

Blood is red.
It's a brighter red when saturated with oxygen after passing through the lungs.

Answer 9

It is dark red when it has done a lap of the body and used all the oxygen in it... when it is passed through the heart and lungs it becomes bright red again

Answer 10

that's a colour of dark red . trash inside your body is carried by blood flowing inside the veins. and that's why the blood is dark red.