In which part of the body, the blood is purified (oxigenation) ?
A
Heart
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B
Atrium
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C
Lungs
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D
Ventricle
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Solution
The correct option is C Lungs The lungs are responsible for the oxygenation (purification) of blood. In the lungs, alveoli are thin-walled structures and surrounded by numerous capillaries. At this site, the CO2 from the blood is taken up by the alveoli and O2 is replenished in the blood.