Question

which of them contains less nitrogen waste- renal veins and renal artery?​

Answer 1

Answer:

Renal veins contains less nitrogenous waste

Explanation:

Renal vein contains less nitrogenous waste as Renal artery brings oxygenated blood to the kidneys from the aorta which arises out of heart, Pulmonary artery and vein also carries blood from heart to lungs and lungs to heart respectively but this blood is not pure and has nitrogenous waste in it while renal vein carries deoxygenated but filtered blood to the heart from where it is again pumped to the entire body.

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Answer 2

Answer:

renal veins

Explanation:

the purified blood is carried away from kidney by renal veins towards heart