Figure shows schematic plan of blood circulation in humans …

Biology Body Fluids and Circulation Previous Year Questions Single Correct MCQ

Published on: August 13, 2026

Figure shows schematic plan of blood circulation in humans with labels A to D, Identify the label and give its function/s.

D-Dorsal aorta-takes blood from heart to body parts, PO2 = 95 mm Hg

A-Pulmonary vein-takes impure blood from body parts, PO2 = 60 mm Hg

B-Pulmonary artery-takes blood from heart to lungs, PO2 = 90 mm Hg

C-Vena Cava-takes blood from body parts of the right auricle, PCO2 = 45 mm Hg

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