Choose between the two options to answer the question specified in the brackets for the following.
(i) Blood in the renal artery or renal vein (Which one has more urea?)
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Solution
Renal artery
Renal artery carries blood to the kidney whereas the renal vein carries blood away from the kidney.
As the kidney filters the blood, renal vein which carries blood away has less urea concentration than the renal artery.
Thus, renal artery has more urea than renal vein.