<prompt> All of the following statements regarding vas deference are true except -The terminal part is dilated to form ampullaIt crosses ureter in the region of ischial spineIt passes lateral to inferior epigastric artery at deep inguinal ringIt is separated from the base of bladder by the peritoneum  <response>: The base of bladder and vas deferens are closely apposed as there is no peritoneum in between them. 