Which of the following statements best describes the structure and function of the ureters? Two tubes that drain urea produced in the liver and transport it to the kidneys, where it is filtered Two tubes that drain urine produced in the kidneys and transport it to the bladder, where it is collected Two organs that collect urine produced in the kidneys until ready to be expelled from the body Two organs that aid in the production of urea in the liver and the production of urine in the kidneys