What is the function of the ureters?

The ureters serve the essential role of transporting urine from the kidneys to the bladder. They are muscular tubes that extend from each kidney and connect with the bladder, facilitating the movement of urine through peristaltic contractions. This function is crucial because it allows for the storage of urine in the bladder until it is excreted from the body. The other options pertain to different structures or functions within the urinary system; for instance, the bladder connects to the urethra, where urine exits the body, and neither the bladder nor the urethra is involved in the transportation of urine directly from the kidneys. Additionally, fluid filtration is a function primarily associated with the kidneys themselves rather than the ureters.