The urethra is a tube that carries urine from the bladder so it can be expelled from the body. Usually the urethra is wide enough for urine to flow freely through it. When the urethra narrows, it can ...
The urethra is a part of the renal system, which also includes the kidneys, ureters, and the bladder. The female urethra starts at the base of the bladder and continues down through the pelvic floor.