Multiple choice

In which organ is deoxygenated blood oxygenated during its circulation?

  1. Heart

  2. Lungs

  3. Pancreas

  4. Liver

  5. Kidney
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The deoxygenated blood is pumped from heart to the lungs. When we breathe in air, it contains oxygen. The gases dissolved in the alveoli of the lungs are passed through the membrane of the alveoli into the capillaries. In the capillaries, the red blood cells containing haemoglobin will bind to the oxygen molecules thus making the blood oxygenated again.

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