It sustainable phrase - "a man of blue blood" - now perceived not only as an allegory distinguishes people aristocratic origin of ordinary people.But why is the entire spectrum of the blue color is selected as the most noble?It is believed that the whole thing - in a thin light skin aristocrats, through which the translucent bluish veins.In another statement, the people of noble birth never native to the lower classes, and very proud of it, preserving the purity of their blood.Although it is not the only explanation of the surprising notion - blue blood.Expression was born in the early Middle Ages, and perhaps earlier.
As the story goes?
medieval historian Aldinar (12th century) in his chronicles mention about the English noble knights who fought with the Saracens, fell to the ground wounded, but not a drop of blood flowed from their wounds!In the same chronicles referred to the concept of "blue blood."Later, in the 18th century, the term was very popular in Spain.Noble Hidalgo found proof of the purity of the blood in only one: the wrist had to be thin, light skin with a translucent bluish veins.Otherwise, a person suspected of mixing blood with Moorish or Arabic.
In more recent history the concept of actively exploited to propagate racism, superiority of some nations over others.Suffice it to recall the German fascism and the dominant idea of the blue Aryan blood.
Do blue blood in nature?
Yes, blue-blooded creatures in nature there.They live mostly in the ocean - a horseshoe crabs, squid, octopus and other shellfish branchiopoda.Their blood is not the substance, which imparts a reddish tint liquid - iron.This is the key word in matters of color of blood, but this - later.
People blue bloods.Who are they?
as it may sound fantastic, these people live on the planet Earth.According to various sources the number ranges from one to seven thousand.The blue liquid flowing through their veins, is not reflected in their "usual" blood just flowing in their veins and carries oxygen.But she does color bluish.The explanation for this is.As mentioned above, the red blood cells attached to the iron.Humans "blue bloods" role of iron in the blood carries the other element - copper which reacts with the small amount of iron (which is still present), blood stains in a bluish-purple color.It would seem, is no fiction.But the ordinary person certainly question arises: where are these people?Who saw them?Or is it some mystical creatures?Or maybe all the aliens?By the way, this is one of the versions.
the Science?
Science says that this phenomenon is expressed by the great wisdom of nature.The blue color of the blood, or variations of the main pigmented element - copper instead of iron - is nothing but as a safety net in case of extinction of one species of living beings.By the way, the medieval legend might indicate that copper in the blood contributes to decontaminate wounds, their rapid healing due to rapid blood clotting.Because not knights poured rivers of blood.
And while all this is only a hypothesis - allegory of humanity prefers to use the expression, giving all sorts of people of noble birth flattering epithets: Prince blue blood, blue blood aristocrat ...
