In a healthy, functioning urinary system, urine flows from the kidneys through thin muscular tubes called ureters and into the bladder. Once in the bladder, urine is stored until it is expelled from the body through the urethra during urination. This process helps maintain fluid balance and eliminate waste products from the body, but it can be easily disrupted. In some instances, one or more of the ureters can become blocked, which disrupts the flow of urine and can
