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Diagram of the Human Urinary System (Infographic)

Infographic: How the human body's urinary system works.
How the human body's urinary system works. (Image credit: by Ross Toro, Infographics Artist)

The urinary system - also known as the renal system - produces, stores and elimiates urine, the fluid waste excreted by the kidneys. The system works with the lungs, skin and intestines to maintain the balance of chemicals and water in the body.

The kidneys are the primary organs of the urinary system. They remove urea - a waste product formed by the breakdown of proteins - from the blood through filtering units called nephrons.

A normal,  healthy bladder can hold up to 16 ounces (almost half a liter) of urine comfortably for 2 to 5 hours.

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Ross Toro
Ross Toro is a contributing infographic artist for Live Science. He specializes in explanatory graphics that deal with science topics. Ross is a former art director of the Los Angeles Times, Associated Press and United Press International. He teaches Filipino martial arts when not dabbling in cartoons and animation.