What is the small, hollow tube that carries urine from the kidneys to the bladder called?

The small, hollow tube that carries urine from the kidneys to the bladder is known as the ureter. Each kidney has its own ureter, which transports urine, a waste product formed from the filtration of blood, down to the bladder where it is stored until urination.

The ureters are vital for the urinary system, as they ensure that urine flows from the kidneys—where it is produced—into the bladder for temporary storage. This process is part of the body’s way of managing waste and regulating fluid balance.

The other terms listed refer to different structures within the urinary system: the urethra is the tube through which urine exits the body from the bladder; the bladder is the organ that stores urine; and the kidneys are the organs that filter blood to produce urine. Understanding these anatomical terms and their functions is crucial for comprehending the urinary system's overall operation.