The urinary system keeps chemicals, such as potassium and sodium, and water in balance by removing a type of waste called urea from the blood.
- Urea is produced when protein found in meat products is broken down in the body.
- Urea is carried in the bloodstream to the kidneys.
- Other important functions of the kidneys include blood pressure regulation, and the production of erythropoietin, which controls red blood cell productions in the bone marrow.
Illustration: Sarah Dobbins