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الجمعة، 30 نوفمبر 2012

Since red blood Why do our veins look blue?

Since red blood Why do our veins look blue?
Scientific question is very simple, but at the same time that comes to mind too much, we know that the red color of blood, if that makes the veins that we see close to the skin look blue or bluish some thing?


 
Is not it supposed to be the veins
 
Phenomenon red color of blood they contain?


 
The veins that we see in our skin is never red
 
But there is a logical reason for this, where red blood cells contain, which account for approximately 40 percent of the size of our blood,
 
Carry oxygen molecules called hemoglobin
 
When the red blood cells go through via the lung hemoglobin picks up oxygen and carries, and becomes
 
Red Aleghana during the process.


 
And called the combination of hemoglobin with oxygen
 
Boxihimocalobin, and is pumped from the heart
 
High pressure towards the network of arteries
 
Deployed in the entire muscle tissue
 
When you reach the red blood cells to the tissues
 
They loaded Baloxihimocalobin pass through small blood vessels called capillaries very bloody


 
Abandon its cargo of oxygen
 
The cells used those load in metabolic processes and thus Aloxihimocalobin lose oxygen in it, and through this process turns hemoglobin to color between blue and violet-called de - Ooxihimocalobin accumulates in the veins
 
Larger and larger during the return trip to the heartThus, the blue veins that we see -
 
Ie, from veins, are those that carry
 
Blood oxygen-free, and that color already
 
Tends to violet.

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