tube-like organ of the urinary system that carries urine out of the body from the bladder and, in males, also carries semen out of the body organ system that includes the kidneys, ureters, urinary bla...tube-like organ of the urinary system that carries urine out of the body from the bladder and, in males, also carries semen out of the body organ system that includes the kidneys, ureters, urinary bladder, and urethra and that is responsible for filtering waste products and excess water from the blood and excreting them from the body in urine liquid waste product of the body that is formed by the kidneys and excreted by the other organs of the urinary system