The kidneys excrete urea, from protein catabolism, and uric acid, from nucleic acid metabolism.
nitrogen
urea
Urine is excreted from the kidneys.
Urea is produced by the liver and is excreted by the kidneys as a part of urine.
SKIN
Tom Sigal
urine
Elimination is the process by which a drug is excreted from the body through the kidneys.
as urine, produced by the kidneys
Kidneys filter waste from your blood so that it can be excreted.
Water (e.g. a mixture of fluid) is excreted through the urine.Fluids are reabsorbed from the large intestines and then shuttled to the kidneys. The kidneys process fluids for excretion.
The main waste excreted by the skin is heat.
Uroporphyrin is a substance that is excreted in the urine. This is excreted in very small amounts at a time.