The kidneys handle it
The kidneys
The kidneys are responsible for filtering the blood.
kidneys
Smooth muscle is responsible for moving fluids through the urinary system. These muscles are found in the walls of the ureters and bladder and contract to push urine from the kidneys to the bladder and then out of the body.
The renal arteries of the cardiovascular system delivers waste to the kidneys.
The kidneys actually play a major role in maintaining blood pressure. The kidneys are also responsible for flushing out toxins from the body.
The kidneys
The kidneys are responsible for cleaning the blood in the body. The kidneys are severely affected by drinking alcohol for example because of this purpose.
Liver primarily, and the kidneys as well
The adrenal glands which are located near the kidneys.
The name of that hormone is erythropoietin. It is produced by your kidneys.