The Judiciary of Oklahoma has six levels. Most cases start in the district courts, which are courts of general jurisdiction. The lowest level courts are the Municipal Courts which exist to oversee the administration of justice within cities and have jurisdiction only over the violation of city ordinances. Appeals from Municipal Courts are heard by District Courts. There are 77 District Courts, with each having either a single or multiple District Judges with at least one Associate District Judge to administer justice. Appeals from the District Courts and challenges to certain governmental decisions are heard by either the Oklahoma Court of Civil Appeals for civil appeals or the Oklahoma Court of Criminal Appeals for criminal appeals. The Court of Civil Appeals has twelve judges who sit in two-judge divisions and the Court of Criminal Appeals has five judges.