Question

In which part of the body, the blood is purified (oxygenation)?
a. Heart
b. Atrium
c. Lungs
d. Ventricle

Answer 1

Hint: Blood purification is the process, where the impure blood or deoxygenated blood, which means the blood carries carbon dioxide rather than oxygen is purified and then blood is oxygenated, where hemoglobin is attached with oxygen molecule occurs

Complete answer:
The circulation that occurs in mammals is pulmonary circulation.
- All the metabolism happens in the body releases the metabolic wastes, and makes the blood impure or deoxygenated.
- This deoxygenated blood in the body parts is carried to the right atrium of the heart.
- From the right atrium, the blood enters the right ventricle through tricuspid valves.
- This deoxygenated blood in the right ventricle travels to the lungs through the pulmonary artery.
- In the lungs, the blood is purified, because the partial pressure of oxygen is high, where the hemoglobin has a high affinity for the oxygen in the lungs, and it converts the deoxygenated blood to oxygenated blood.
- And from the lungs, the purified blood travels and enters the left atrium through pulmonary veins.
- The blood from the left atrium is entered to the left ventricle through the mitral valve.
- Finally, from the left ventricle, the oxygenated blood is carried to the body parts by aortic valves.
- So the blood is purified in the lungs, and it is the correct answer.

Hence, the correct answer is option (C).

Note: In general arteries are the blood vessels which carry oxygenated or pure blood in the body, but the pulmonary artery is different, where it carries impure blood to the lungs, and at the same time, veins carry the deoxygenated blood or impure blood, but the pulmonary veins carry pure blood to the heart.