Urea is formed in the liver. Ammonia is converted into urea by combining with CO2.
Urea is comparatively less toxic than ammonia and can be stored for a longer time in the body.
This cone shaped glandular organ is located in the upper right-hand portion of the abdominal cavity, beneath diaphragm and to the right of the stomach.
It secrets bile and plays a major role in the metabolism of carbohydrate, protein, lipid and amino acid metabolism.