Excretory Products And Their Elimination Ques 22
22. In mammals, which blood vessel would normally carry largest amount of urea? [2016]
(a) Renal Vein
(b) Dorsal Aorta
(c) Hepatic Vein
(d) Hepatic Portal Vein
Show Answer
Answer : c
Hints & Solutions
(c) Hepatic Vein, because the liver produces urea and other waste materials and then it pours it all into the inferior vena cava, not the right ventricle of the heart, for oxygenation. The heart distributes the blood to various parts of the body from here. So the impure blood brought by the Hepatic Vein and other blood vessels get distributed through the aorta. This will automatically imply that the Renal Artery will contain lesser impure blood than the Hepatic Vein.
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