Dear student 1. Kidney - the kidney filter the blood and concentrate the filtrate to make urine. 2. Ureters - ureters transport the urine to the urinary bladder. 3. Urinary bladder - urinary bladder is like a holding tank for the urine, until its ready to be excreated. 4. Urethra - Urethra is the tube that connects the unirary bladder to the outside of the body for excretion. Regards