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Figure shows schematic plan of blood cir...

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

A

C - Vena Cava - takes blood from body parts to right auricle, `PCO_2` = 45 mm Hg

B

D- dorsal aorta -takes blood from heart to body parts, `PO_2` = 95 mm Hg

C

A - Pulmonary vein - takes impure blood from body parts, `PO_2` = 60 mm Hg

D

8 - Pulmonary artery - takes blood from heart to lungs, `PO_2` = 90 mm Hg

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