Is there such thing as blue blood?

Answer 1

I am an MD. De-oxygenated blood is a very dark bluish black color. This is generally not consisent with life. It turns red when complexed with oxygen, or carbon monoxide. "Blue Blood" is a slang term for nobility, so if you are of a medieval mind set, then yes, you can have blue blood coursing through your veins, I suppose, such as Lady Diana Spencer.

Answer 2

Blue blood may relate to:

Hemocyanin: a blood protein in many molluscs and the arthropod horseshoe crab, whose oxygenated form is blue;
Hemocyanins (also spelled haemocyanins) are respiratory proteins, metalloproteins containing two copper atoms that reversibly bind a single oxygen molecule (O2). Oxygenation causes a color change between the colorless Cu(I) deoxygenated form and the blue Cu(II) oxygenated form. Hemocyanins carry oxygen in the blood of most molluscs, and some arthropods such as the horseshoe crab. They are second only to hemoglobin in biological popularity of use in oxygen transport.

and

Nobility: in the English language, blue blood is used to denote noble birth. Nobility is a traditional hereditary status that exists today in many countries (mainly present or former monarchies).

Answer 3

spiders do because they have a copper subsitute where we humans have iron this causes the blood to be blue
or
there is a saying that royalty has blue blood because a long time ago in england royalty spent all thier time indoors so thier veins showed through on the pale skin and appeared blue
or
the humans blood before it hits oxygen in the system of veins the blood is a deep red/purple commonly refered to as blue blood

Answer 4

Horseshoe crabs have blue blood.

Despite what is said above, human blood is really more of a dark red, and blue veins is caused by "an optical effect caused by the way in which light penetrates through the skin"

Answer 5

yes and no
the fact that all blood is blue until it touches oxygen is a pure myth. it is deep red.... due to high iron contain and will become bright red if oxigenated.

Blue blood may relate to:

Hemocyanin: a blood protein in many molluscs and the arthropod horseshoe crab, whose oxygenated form is blue;
Nobility: in the English language, blue blood is used to denote noble birth.

Answer 6

The oxygenated blood in the arterial system is bright red. The deoxygenated blood in the venous system is a darker color, due to the lack of oxygen. Some people call that blue blood, although most biology texts state that the blood is dark red or purple, rather than blue.

Answer 7

Yes, there’s a fish living in cold waters around Antarctic rich with oxygen, so this fish does not need hemoglobin, its blood is blue indeed.

Answer 8

Just look at your veins. What color are they? Actually, they're so thin that the blue blood can be seen flowing through them. When blood hits air, well, others have answered that part already.

Answer 9

spiders do because they have a copper subsitute where we humans have iron this causes the blood to be blue
or
there is a saying that royalty has blue blood because a long time ago in england royalty spent all thier time indoors so thier veins showed through on the pale skin and appeared blue
or
the humans blood before it hits oxygen in the system of veins the blood is a deep red/purple commonly refered to as blue blood

Answer 10

no .blue blood indicates that it is devoid of oxygen. it carries carbon di oxide from the tissues &lungs to heart &is called as blue blood or impure blood