Multiple choice

The structure having least concentration of urea is

  1. Hepatic vein

  2. Hepatic artery

  3. Renal Vein

  4. Renal artery
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

It contains least amount of urea.Cell waste is discharged in the veins for excretion through the kidneys. The body circulates about 425 gallons of blood through the kidneys on a daily basis, but only about a thousandth of this is converted in urine. The remainder goes back into circulation,  through the renal arteries. From the Bowman's capsule, the blood is carried through the compact network of capillaries,  that forms the glomerulus within the capsule. The capillaries eventually reconverge into small venules,  which lead to the larger renal veins. There are two renal veins, one extending from each lobe of the kidney, and opening into the vena cava.

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