in mammals which blood vessels would normally carry largest amount of urea
Hello Antara,
Break down of excess of amino acids i.e protein into urea is done by the liver. So the maximum amount of urea will be found in the vein leaving the liver. Hepatic Vein leaves the liver carrying the largest amount of urea. The hepatic vein carries blood away from the liver to the vena cava which transports it back to the heart
Hope this answer was helpful.