Which medical term describes the tube that carries urine from the kidney to the bladder?

The correct term for the tube that carries urine from the kidney to the bladder is "ureter." Each kidney has its own ureter, which serves as the conduit for urine, produced by the kidneys, to travel to the bladder for storage prior to being excreted from the body. The ureters are characterized as muscular tubes that contract rhythmically to transport urine efficiently, utilizing a process called peristalsis.

The urethra, while related to the urinary system, is the tube that carries urine from the bladder to the outside of the body, rather than from the kidneys to the bladder. Urethritis refers to the inflammation of the urethra itself, which can be caused by infection or irritation, and it does not describe any structural element related to urine transport. A nephron is the basic structural and functional unit of the kidney that is involved in filtering blood and producing urine, rather than being a tube for transporting urine. Thus, "ureter" is the focused term that accurately identifies the specific structure involved in the movement of urine from the kidneys to the bladder.