What endpoint is associated with the urinary system?

The urinary system is primarily concerned with the formation, storage, and elimination of urine, which is produced by the kidneys. The endpoint of this system is the urethra, which is the tube that transports urine from the bladder to the outside of the body. The urethra acts as the final conduit for urine elimination, making it a crucial part of the urinary system's function.

In contrast, while the kidneys are vital organs for urine production, they do not serve as the endpoint for urine excretion. The aorta, being a major artery, is involved in the circulatory system and not directly related to urinary excretion. The gallbladder, on the other hand, is part of the digestive system and stores bile, having no relevance to urine formation or elimination. Understanding these roles clarifies why the urethra is indeed the endpoint of the urinary system.