The penis is the male organ of reproduction and also the organ of urinary excretion. The testes are a paired set of glands that produce sperm. The scrotum is the sac that houses the testes.
Review Date: 9/26/2011 Reviewed By: Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine; Louis S. Liou, MD, PhD, Chief of Urology, Cambridge Health Alliance, Visiting Assistant Professor of Surgery, Harvard Medical School. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.