Mar 22, - When urine is formed, tubes called ureters transport it to the urinary bladder, One end of the uterus called the cervix, opens into the vagina, whereas the On one end of the ureters, there is a funnel shaped expansion called the renal pelvis. . Deep brain stimulation for Parkinson's disease: Barry's story. During childbirth, the cervix expands about 4 inches (10 centimeters) so the baby can travel from the uterus through the vagina and into the world. The vagina is a tube that connects the uterus to the outside of the body. The entrance to the vagina is on the outside of the body. It's called the vaginal g: story | Must include: story.