They act as a filter for your blood to make sure that there are no substances in it that should not be there. As well as substances that have no use for the body (they must be in the bloodstream though)
Ex: alcohol, this is why alcoholics have kidney problems
skin
The skin is both a sense and excretory organ.
skin, lung, kidney
kidney, skin,
The main organ of the excretory system is the kidneys. The kidneys filter waste products and excess substances from the blood to produce urine, which is then eliminated from the body through the urinary system.
The intestines, small and large. The skin is the largest organ but its function is not predominantly excretory.
urethra
lungs skin and kidney
the main parts of the excretory system is the skin,the kidneys,the liver,and the bladder
kidney
skin
Bladder. It also includes the skin, lungs, and the kidneys.