Multiple choice Which of the following pair is not correctly matched? Largest vein in human body – superior vena cava Largest artery – dorsal aorta Smallest blood vessel – capillary Renal vein – carrier of least amount of urea Hepatic vein – carrier of maximum amount of urea Reveal answer Fill a bubble to check yourself A Correct answer Explanation This is the incorrectly matched pair. Largest vein in human body – inferior vena cava, is the correct pair.