| Ureter | Urethra |
| Number. There are two ureters. | Urethra is single. |
| Position. It extends from hilus of kidney to urinary bladder. | It extends from urinary bladder to an external opening |
| Conduction. It conducts urine through peristalsis. | It conducts urine through force of contracting urinary bladder. |
| Sexes. Ureters are of the same size and conduct only urine in the two sexes. | Urethra is short in females (4 cm) and long in males (20 cm). In males it conducts both urine and semen while in females it passes only urine. |