what color is you blood?

Question

i was taught it is blue but untill recently i have been told it is red what is it and why is it that color?

Answer 1

Plain and simple, blood is not blue, either in your body or outside.
The blood cells that make up most of the solution we call blood are red blood cells. They have a large protein inside called hemeglobin, which is red in color.
The shades of red change from dark crimson red (when oxygen levels are reduced) to very bright red (when fully oxygenated). Blood is never blue.

Threre are three reasons for the confusion that blood is blue:

1. For some people the veins of the hand are very close to the surface and the outside of these veins appear blue. The blood inside is red.

2. Some crabs have a type of blood that has more of a protein that is bluish, so they do have a bluish colored blood.

3. Charts and illustrations of the circulatory system show blood turning from red to blue as it goes through the body and the oxygen is used up. Those colors are chosen for illustration purposes, to show that the blood is changing, but the blood doesn't actually make the color change that is shown in these charts.

Again, hear it clearly, human blood is never blue.

Answer 2

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.

Answer 3

Red

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 colour. 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.

The blood of horseshoe crabs is blue, which is a result of its high content in copper-based hemocyanin instead of the iron-based hemoglobin found, for example, in humans.

hope this helps to clear things up and if not ask someone in the medical field that draws blood.
good luck

Answer 4

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 colour. 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.

The blood of horseshoe crabs is blue, which is a result of its high content in copper-based hemocyanin instead of the iron-based hemoglobin found, for example, in humans.

Answer 5

It is red.
If it is deoxygenated, it is dark red, but appears blue when viewed through the filter of the skin.

If you take deoxygenated blood from the body into a sealed, oxgen free environment, without it ever touching oxygen, it is still red, and we do this all the time with bloodwork.

It is red because the majority of bloodcells are red bloodcells, which are, themselves, red in color.

Their color is derived in part from iron.

http://www.globalclassroom.org/blublud.html
http://en.wikipedia.org/wiki/Blood

Answer 6

Blood is NEVER blue! Blood is red because of hemoglobin- without hemoglobin, blood would be the color of plasma and interstitial fluid, which is a kind of a yellow tinged semi-opaque fluid.

Answer 7

There is a colour described as 'blood red'! And, blue blooded people are considered as 'nobles' or 'aristocrats'! Blood is red, whatever your religion or nationality! Why it is so, is due to red corpuscles and haemoglobin!

Answer 8

Blood is red in colour because of the pigment called haemoglobin which contains iron in it.

Answer 9

a blood is invisible(blood plasma). It is red because of the cells and the Hemoglobin. (These are my ideas formed from what I read)

Answer 10

It is blue in the inside but when it hits the oxygen in the air it turns red.