Which of the following is NOT a function of the urinary system?

• A. Filters waste from the blood
• B. Regulates blood pressure
• C. Maintains glucose level in the blood
• D. Produces urine

Answer: (C)

The urinary system's primary functions are to filter waste from the blood, regulate blood pressure, and produce urine. It accomplishes waste filtration through the kidneys, where blood is processed to remove excess substances and toxins, leading to urine production. Additionally, the kidneys play a crucial role in regulating blood volume and pressure through mechanisms such as the renin-angiotensin system.

The maintenance of glucose levels in the blood is primarily the responsibility of the endocrine system, particularly through the actions of insulin and glucagon, produced by the pancreas. While the kidneys can contribute to glucose regulation via processes like gluconeogenesis and reabsorption, the primary control of blood glucose occurs through hormonal regulation. Therefore, the correct choice indicates that maintaining glucose levels is not a direct function of the urinary system.