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Q.
Choose the schematic diagram which properly represents pulmonary circulation in humans.
Body Fluids and Circulation
Solution:
Pulmonary circulation is the movement of blood between heart and lungs. During this pathway deoxygenated blood entering the right atrium, moves into the right ventricle. From here it moves through the pulmonary arch into the lungs for oxygenation. Then from lungs the oxygenated blood moves into the left atrium through pulmonary veins.