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Bright red blood is called frank blood, its fresher. Dark red blood is older blood that has been sitting for a while. The colour of fresh blood, say from an open wound, can be different due to variances in the number of red blood cells that person has.
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JordanVenous blood is darker than other blood flowing throughout the body. This is due to the fact that blood inside veins is full of oxygen, which causes it to be a darker color.
likely because your blood has less oxygen than most... that or its having problems being filtered, or maybe high blood pressure there are many reasons it could be that way
Yes because when blood is sent from the heart through the lungs the blood is oxyginated and when it comes back through veins it has no oxygen in it so it is blue.
I think it is a natural happening in your veins. If not, blame the blood cells!
because this blood has a low oxygen content
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Is the blood in your head venous or arterial?
There is some of both. If you think about it, that has to be true. It flows in, it flows out.
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Some parts of the ocean appear darker than others due to differences in the amount of sunlight that penetrates the water. Deeper areas or regions with more particles and organisms can absorb or scatter light, making the water appear darker.
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It's the amount of melanin in their skin; some have more than others, thus they are darker than others.
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Some people have naturally darker skin than others. It all depends on what genes you end up with. Some white people have naturally darker skin, and some black people have naturally lighter skin.
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Depends on the type of soil, environmental conditions, and additives.
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some muscles are red and others are blue of your blood
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