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Body Fluids and Circulations
Question
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Figure shows schematic plan of blood circulation in human with labels - A to D. Identify the label and give its function/s.

  • A - pulmonary vein - takes impure blood from body parts, pO2 = 60 mmHg

  • B - pulmonary artery - takes blood from heart to lungs, pO2 = 90 mmHg

  • C - vena cava - takes blood from body parts to right auricle, pCO2 = 45 mmHg

  • D - dorsal aorta - takes blood from heart to body parts, pO2 = 95 mmHg

Answer

C.

C - vena cava - takes blood from body parts to right auricle, pCO2 = 45 mmHg

A - Pulmonary vein takes impure biood from body parts, pO2 = 60 mmHg

B - Pulmonary artery - takes blood from heart to lungs, pO2 = 90 mmHg.

C - Vena cava - takes blood from body parts to right auricle, pCO2 = 45 mmHg

D - Dorsal aorta - takes blood from heart to body parts, pO2 = 95 mmHg.

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