The urinary system is made up of the kidneys, ureters, urethra and bladder.
Review Date: 9/17/2010 Reviewed By: David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc., Jatin M. Vyas, MD, PhD, Assistant Professor in Medicine, Harvard Medical School; Assistant in Medicine, Division of Infectious Disease, Department of Medicine, Massachusetts General Hospital.