The word "ureter" refers to a tube-like structure in our body that connects the kidneys to the bladder. It is responsible for transporting urine from the kidneys to the bladder so that it can be eliminated from the body. Full definition
Urine is produced twenty - four hours a day and flows constantly from the kidneys through tiny tubes called ureters into the bladder. (texaswestveterinarian.com)
After urine is produced in the kidneys, it flows down tubes called ureters into the bladder. (cuteness.com)