SCIENCE
CIRCULATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Veins
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not flexible, blood is a darker shade of red
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flexible, blood is a darker shade of red
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flexible, blood is a bright red
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None of the above
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Explanation:
Detailed explanation-1: -Blood that has been oxygenated (mostly flowing through the arteries) is bright red and blood that has lost its oxygen (mostly flowing through the veins) is dark red.
Detailed explanation-2: -As blood travels through your body, it loses the oxygen and takes on carbon dioxide (which you exhale). This oxygen-low blood is a darker shade of red.
Detailed explanation-3: -Oxygenated (arterial) blood is bright red, while dexoygenated (venous) blood is dark reddish-purple.
Detailed explanation-4: -Deoxygenated blood is dark red: Most veins carry deoxygenated blood, which is a darker color than oxygenated blood. The deep color of blood makes veins appear dark, too.
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