Is your blood really blue or red?

Question

science homework...

Answer 1

Blood is red. Arterial (oxygenated blood is reddest). Venous blood is darker with less oxygen and appears blue through our skin..

Answer 2

The blood is red. Plain and simple RED. People believe blue because what they see under the surface of the skin is the color of the blood VESSELS.
Place your hand over a lit flashlight. What color appears through the thin walls of the skin of your fingers? RED.
Some people say that air in contact with blood turns the blood red, well hello people. What do you think the blood is for, but to carry oxygen to the cells of the body. The blood remains red from the moment it absorbs oxygen to take to the cells and remains red when it carries carbon dioxide away from the cells to the lungs and organs to remove from the body.

Answer 3

It is red when it is oxygenated and blue when it's not. No right answer. Arterial blood is red, venous blood is blue.

Now here comes the clue train. Red and blue are primary colors, so here is a question to all you geniuses.

What color do you add to red to make it darker????

I can't believe how many clueless people have decided to chime in on this.

"Spectroscopy and the Color of Blood

The changes that occur in blood upon oxygenation and deoxygenation are visible not only at the microscopic level, as detailed above, but also at the macroscopic level. Clinicians have long noted that blood in the systemic arteries (traveling from the heart to the oxygen-using cells of the body) is red-colored, while blood in the systemic veins (traveling from the oxygen-using cells back to the heart) is blue-colored (see Figure 7). The blood in the systemic arteries is oxygen-rich; this blood has just traveled from the lungs (where it picked up oxygen inhaled from the air) to the heart, and then is pumped throughout the body to deliver its oxygen to the body's cells. The blood in the systemic veins, on the other hand, is oxygen-poor; it has unloaded its oxygen to the body's cells (exchanging the O2 for CO2, as described below), and must now return to the lungs to replenish the supply of oxygen. Hence, a simple macroscopic observation, i.e., noting the color of the blood, can tell us whether the blood is oxygenated or deoxygenated."

From source listed below.

Answer 4

THAT IS A TOTAL MYTH!! Your blood is red! I don't know who made that up but someone should sue them for making kids believe that it is red. It's just like saying that Santa is real- there is no proof but people believe it. Not that i dont like Santa Clause or anything...And besides your blood has oxygen in it all the time so even if it was blue without oxygen(which it isn't) it would be red all the time.

Answer 5

Wow, a lot of people are morons. Blood is NOT blue, it is NEVER blue, regardless of whether it's exposed to oxygen or not. When oxygenated (the blood in your arteries), it is bright red. When deoxygenated (the blood in your veins), it is still RED!!! It's just not bright red...it's a dark red with a purplish hue, but it is definitely NOT BLUE!!!!!!!!!!! The veins under your skin may look blue, but the blood in them is NOT BLUE.

One more time, in case anyone missed it. Blood is NOT blue.

Answer 6

It is red. Have you ever given blood or had blood drawn. It never comes into contact with Oxygen, the syringes and tubes are vaccum sealed. Blood is red. I can't believe a top contributor said it is blue. That is assinine. Iron, incidentally is what gives hemoglobin it' red color.
It's Red!

Answer 7

First thing: Blood is *never* blue. Blood is described as dark red (venous) or bright red (arterial). Our veins look blue because we are looking at them *through* our skin. The blood inside them is dark red and it doesn't reflect light very well. The blood you see when you get hurt is usually venous blood. Arterial blood comes out in spurts. It spurts every time the heart beats. I hope you never see that.

Answer 8

First thing: Blood is *never* blue. Blood is described as dark red (venous) or bright red (arterial). Our veins look blue because we are looking at them *through* our skin. The blood inside them is dark red and it doesn't reflect light very well. The blood you see when you get hurt is usually venous blood. Arterial blood comes out in spurts. It spurts every time the heart beats. I hope you never see that.

Answer 9

Red. Depending on the oxygen content, blood can range from a bluish red to a bright red.

Answer 10

Everyone's blood is really blue inside there body but when even a tiny tad of air gets to it the blood turns red.
That is why your viens look blue but your blood looks red