Each of the following organs is part of the urinary system, except for which one?

The rectum is not part of the urinary system; it is part of the digestive system. The urinary system is responsible for the production, transportation, storage, and elimination of urine, which is a waste product of metabolism. The main organs involved in this process include the kidneys, which filter blood to produce urine; the ureters, which transport urine from the kidneys to the bladder; and the bladder, which stores urine until it is excreted. In contrast, the rectum is involved in the expulsion of feces, making it functionally and anatomically distinct from the urinary organs. Understanding the specific roles of each organ helps in recognizing the structures associated with different body systems.