Which of the following organs are part of the urinary system?

The urinary system's primary function is to filter blood and produce urine as a means of waste removal and fluid balance regulation. The correct choice includes the kidneys, ureters, and bladder, which are key components of this system.

The kidneys are responsible for filtering waste products from the blood and producing urine. The ureters are tube-like structures that transport urine from the kidneys to the bladder, where urine is stored until it is excreted through the urethra. Each element functions in a specific role, contributing to the overall process of waste elimination and fluid regulation in the body.

The other options list organs that are not primarily involved in urinary function. For instance, the liver and gallbladder are part of the digestive system, and while the heart and lungs are crucial for circulatory and respiratory functions, they do not play a direct role in the urinary system. The pancreas and spleen are also unrelated to the urinary processes, further differentiating them from the components of the urinary system.