Core Function of Lungs
The most critical detail about the urinary system is its role as the body's ultimate filtration and purification plant.
It relies on a brilliant four-part layout to keep your internal environment clean:
The Filters (Kidneys): Two bean-shaped organs that constantly screen your blood, removing waste and balancing fluids.
The Pipelines (Ureters): Thin tubes that carry the isolated waste (urine) down from the kidneys.
The Reservoir (Bladder): A muscular, expandable pouch that safely stores urine until it's full.
The Exit (Urethra): The final tube that expels the waste out of the body.