ANATOMY

Detailed explanation-1: -The kidney receives the oxygenated blood through the renal artery. The kidney transports the deoxygenated blood through the renal vein. Since the renal vein carries deoxygenated blood, Carbon dioxide is present in a lower concentration in the renal artery than in the renal vein.

Detailed explanation-2: -Renal Veins carry filtered blood from the kidneys to the posterior vena cava. Renal Arteries carry unfiltered blood from the aorta to the kidneys.

Detailed explanation-3: -Answer and Explanation: The renal artery carries oxygenated, unfiltered blood to the kidneys. The renal veins carry deoxygenated, filtered blood from the kidneys back to the heart.

Detailed explanation-4: -2) Because it is an artery, the renal artery is oxygen-rich, carrying from the heart oxygenated blood that supplies the cells of the kidney with their oxygen. So just before the blood enters the kidney by way of the renal artery, it has a high concentration of oxygen, urea, and glucose.