What are the functions of judiciary under system of gorvernment?

It is the Judicial Branch's job to interpret the Constitution. The Judicial Branch is in charge of the court system. There are three different kinds of courts found in the federal court system. The lowest level is the district courts. The 2nd level is the court of appeals. The top level is the Supreme Court. The power of Judicial Review gives the Supreme Court the right to overturn state laws and laws passed by Congress.