1. The kidneys make urine by filtering wastes and extra water from blood.
2. The ureter is a tube that carries urine from the kidney to the urinary bladder.
3. The urinary bladder is a muscular sac in the pelvis, just above and behind the pubic bone.
4.urethra together form the urinary tract, which acts as a plumbing system to drain urine from the kidneys, store it, and then release it during urination.