Answer!!!
3 Urea is made in the liver and is transported in the blood plasma for removal by the kidneys.
Which sequence of blood vessels is the shortest correct route for these urea molecules?
A hepatic artery → pulmonary artery → aorta → renal artery
B hepatic vein → pulmonary artery → pulmonary vein → renal artery
C hepatic vein → pulmonary vein → pulmonary artery → renal artery
D renal vein → vena cava → aorta → hepatic artery

Question

Answer!!!
3 Urea is made in the liver and is transported in the blood plasma for removal by the kidneys. 
Which sequence of blood vessels is the shortest correct route for these urea molecules? 
A hepatic artery → pulmonary artery → aorta → renal artery 
B hepatic vein → pulmonary artery → pulmonary vein → renal artery 
C hepatic vein → pulmonary vein → pulmonary artery → renal artery 
D renal vein → vena cava → aorta → hepatic artery

anonymous · Answer

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anonymous · Answer

I would choose answer B.

As 3-Urea is made in the liver, the 1st blood vessel will be the Hepatic vein. Hepatic refers to the the liver, while vein means the blood is being transferred back to the heart.

Because the destination is the kidneys, the last blood vessel will be the Renal artery. Renal refers to the kidneys, and artery means the blood arrives from the heart.

Finally, the pulmonary artery precedes the pulmonary vein. Blood in the pulmonary artery goes from the heart to the lungs, and blood from the pulmonary vein returns from the lungs to the heart.