Role of Liver in Excretion
The liver lies below the diaphragm and it receives blood from hepatic artery and hepatic portal vein.
Blood flows out of the liver through hepatic vein.
Excretion of Nitrogenous Wastes
Excess amino acids cannot be stored in the body; they are deaminated in the liver.
Hydrogen is added to amino group to form ammonia which combines with carbon (IV) oxide to form urea.