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Question

Which blood vessel in mammals would normally carry largest amount of urea?

A
Renal artery
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B
Hepatic vein
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C
Renal vein
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D
Hepatic portal vein
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Solution

The correct option is B Hepatic vein
Hepatic vein drains de-oxygenated blood from the liver into the inferior vena cava. The urea is formed in the liver by ornithine cycle. The urea from the liver is carried away by the hepatic vein. The inferior venacava further carries this urea laden blood to the kidney which purifies the blood and helps in excretion.
So, the correct answer is option B.

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