Biology for IGCSE & O level - Excretion In Humans (Section 2 - No. 46)
Which blood vessel carries blood with a high concentration of urea away from the kidney?
Renal artery
Renal vein
Aorta
Inferior vena cava
Explanation
The renal vein carries blood that has been filtered by the kidney and contains a higher concentration of urea than the blood entering the kidney.
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