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Blood Color in Veins (Blue Blood)
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● FeaturedMany people remember being taught or believing that deoxygenated blood inside veins is actually blue, only turning red upon exposure to air.
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What People Remember
People often remember believing that the blood inside veins is blue due to lack of oxygen, turning red only when exposed to air.
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What's Actually True
Human blood is always red. Deoxygenated blood is a darker, duller red (often described as maroon), not blue. Veins appear bluish through the skin because of how light interacts with skin and blood.
Tags
#blood#veins#color#circulation#oxygen
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