what color is blood as it circulates throughout the body?

Question

is blood blue (in color) , or does it somehow change(in color) to red ,somehow, during the oxygenization process?

Answer 1

It's actually dark red to a maroon in color. The red color is from hemoglobin that helps the red blood cell carry oxygen. Venous blood is darker in color because it lacks oxygen. Arterial blood is bright red and full of oxygen. As for the blue blood thing, it was once thought that royal/aristocratic people in the middle ages had blue blood due to the bluish color of their veins seen through their very light almost white skin.

Answer 2

Color
In humans and other hemoglobin-using creatures, oxygenated blood is bright red. This is due to oxygenated iron in the red blood cells. Deoxygenated blood is a darker shade of red, which can be seen during blood donation and when venous blood samples are taken. However, due to an optical effect caused by the way in which light penetrates through the skin, veins typically appear blue in color. This has led to a common misconception that venous blood is blue before it is exposed to air. Another reason for this misconception is that medical charts always show venous blood as blue in order to distinguish it from arterial blood which is depicted as red on the same chart.
Please see the webpage for more details on Human blood.

Answer 3

It's red. I don't believe what they say about it being blue. If that was the case you would see it as blue sometimes, like when they withdraw blood, it goes right into the container. Or when you first cut yourself, it seems like the blood would first squirt out blue and then turn red if it was the oxygenation process.

Here, I found this site, it says that blood is red inside the body and is different shades of red, depending upon whether it's on it's way away from the heart or to the heart:
http://www.seps.org/oracle/oracle.archive/Expert/poirot/Life_Science.Cell/2006.01/001135199284.28547.html

By the way, lobsters and crabs do have blue blood, because their blood contains copper where as ours contain iron.

Answer 4

As blood is saturated with oxygen it becomes red (ie, when it is flowing away from the heart) in colour as it has carbon dioxide (flowing towards the heart) in it is bluish green or something similiar in colour. Hope this answers your question

Answer 5

it is a dark blue
when oxygen hits it goes through a chemical process and is changed to red

Answer 6

Blood being blue is a myth, it is red.

Answer 7

blood carrying oxygen is red.....blood carrying CO2 is blue.

Answer 8

blue

Answer 9

greenish blue