Q. Largest vein in the human body?

A
Pulmonary artery
B
Pulmonary vein
C
Inferior venacava
D
Aorta
Solution:

The inferior vena cava (or caudal vena cava in some animals) travels up alongside the abdominal aorta with blood from the lower part of the body. It is the largest vein in the human body.

The superior vena cava (or cranial vena cava in animals) is above the heart, and forms from a convergence of the left and right brachiocephalic veins, which contain blood from the head and the arms.

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