SCIENCE
CIRCULATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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oxygen-rich
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oxygen-poor
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deoxygenated
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None of the above
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Detailed explanation-1: -As blood travels through the body, oxygen is used up, and the blood becomes oxygen poor. Oxygen-poor blood returns from the body to the heart through the superior vena cava (SVC) and inferior vena cava (IVC), the two main veins that bring blood back to the heart.
Detailed explanation-2: -Oxygen diffuses out of red blood cells as blood flows through capillaries in our metabolizing tissues. The affinity of hemoglobin for oxygen decreases as temperature rises. As oxyhemoglobin is heated in the metabolizing tissues, its affinity decreases and hemoglobin unloads oxygen.
Detailed explanation-3: -Deoxygenated blood is the blood that exchanges oxygen for carbon dioxide from the cells. The concentrations of oxygen is 16% and that of carbon dioxide is 4% in deoxygenated blood.