Question

Which blood vessel has the highest and lowest concentration of urea?

Answer 1

lowest concentration of urea is present in hepatic vein. This is beacuse urea is a by-prpduct of amino acid catabolism, that occures in the liver. Hence liver is the primary site for urea production. And yes this concentration will increase a few hours after meals, especially of that meal is rich in proteins.Urea is excreted out by the kidneys. Therefore, the blood vessel that leaves the kidneys will have the least concentration of urea and other nitrogenous metabolic wastes. This blood vessel is the hepatic vein.

The liver does the job of breaking down excess amino acids, which are a result of the breaking down of the proteins, into urea. The hepatic vein, which leaves the liver, then carries this urea out of the liver.

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Answer 2

the blood vessel that leaves the kidneys will have the least concentration of urea and other nitrogenous metabolic wastes. This blood vessel is the hepatic vein