PHYSIOLOGY
CARDIOVASCULAR PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What color will blood exhibit if it has a high oxygen content?
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Blue
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No color
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Bright red
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Purple
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Explanation:
Detailed explanation-1: -Oxygenated (arterial) blood is bright red, while dexoygenated (venous) blood is dark reddish-purple.
Detailed explanation-2: -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. Anyone who has donated blood or had their blood drawn by a nurse can attest that deoxygenated blood is dark red and not blue.
Detailed explanation-3: -Oxygen-rich blood is bright red as it leaves the heart. When it returns in veins with less oxygen, it’s still red, but it’s a deeper, darker red, so veins look blue.
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