What is the primary function of the urinary system?

The primary function of the urinary system is to maintain homeostasis by regulating the composition, pH, and volume of body fluids. This process is essential for the body's overall balance and stability. The kidneys, which are the central organs of the urinary system, filter blood to remove waste products while also managing the levels of various substances such as electrolytes and water. By adjusting the concentration of these substances, the kidneys help to regulate the acid-base balance (pH) and ensure that the body's fluid balance is maintained.

In addition to waste removal, the kidneys play a crucial role in controlling blood pressure through the regulation of fluid volume, which is indirectly related to the overall function of the urinary system. The hormones produced by the kidneys, such as erythropoietin and renin, also play significant roles in bodily functions. However, the primary goal of the urinary system revolves around maintaining the body's internal environment, making the regulation of body fluid composition, pH, and volume its foremost responsibility.