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Question

Choose the schematic diagram which properly represents pulmonary circulation in humans:


A

Right ventricle (oxygenated blood) Lungs deoxygenated blood Aorta

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B

Right ventricle (deoxygenated blood) Lungs oxygenated blood Left auricle

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C

Left ventricle (oxygenated blood) Lungs oxygenated blood Right auricle

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D

Right ventricle (deoxygenated blood) Lungs oxygenated blood Aorta

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Solution

The correct option is B

Right ventricle (deoxygenated blood) Lungs oxygenated blood Left auricle


During pulmonary circulation, deoxygenated blood from right ventricle flows through pulmonary artery and reaches lungs. After the gaseous exchange at lungs, CO2 present in blood is exchanged with O2 and brought back to left auricle of heart by the pulmonary veins.


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