Which structure transports urine from the kidneys to the urinary bladder?

The structure that transports urine from the kidneys to the urinary bladder is the ureter. Each kidney is connected to its respective ureter, which is a muscular tube that actively contracts to propel urine downward through peristalsis. This process ensures that urine moves efficiently from the renal pelvis, where it is collected and funneled out of the kidney, to the urinary bladder, where it is stored until it is excreted.

The urethra, while it is part of the urinary system, is responsible for transporting urine from the bladder to the outside of the body, not from the kidneys to the bladder. The renal pelvis is a funnel-like structure inside the kidney that collects urine produced by the renal tubules and directs it into the ureter. The collecting duct is involved in the final stages of urine formation within the kidney, but it does not transport urine to the urinary bladder. Instead, it leads the urine into the renal pelvis, where it then flows into the ureter.