Which statement best describes how two structures work together to hold urine inside the body until it is ready to be released? The urethra stores urine, and the sphincter blocks urine from passing to the bladder. The bladder stores urine, and the sphincter blocks urine from passing to the urethra. The sphincter stores urine, and the bladder blocks urine from passing to the urethra. The urethra stores urine, and the bladder blocks urine from passing to the sphincter.