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Body system

Urinary system

Systema urinarium

Function: Filters blood, removes wastes and extra water as urine, and keeps fluids and salts in balance.
Includes: Kidneys, ureters, bladder and urethra.¹²

Drawing of the urinary bladder with the ureters and the urethra — The urinary bladder, joined by the ureters above and the urethra below.Educational illustration (AI-generated) — not a medical image

Organs of this system

Educational illustrations, not medical images.

A short overview linking this part to related content.

Conditions that affect it

Includes

Specialty

Imaged with

EndoscopyProcedure

References

1
NCI SEER Training. Urinary System. training.seer.cancer.gov/anatomy/urinary/
Educational & historical references · Accessed 2026-10-03
2
NIDDK / NIH. Your Kidneys & How They Work. www.niddk.nih.gov/health-information/kidney-disease/kidneys-how-they-work
Health agencies & guidelines · Accessed 2026-10-04