Ill. Const. art. VI, § 6

Appeals from final judgments of a Circuit Court are a matter of right to the Appellate Court in the Judicial District in which the Circuit Court is located except in cases appealable directly to the Supreme Court and except that after a trial on the merits in a criminal case, there shall be no appeal from a judgment of acquittal. The Supreme Court may provide by rule for appeals to the Appellate Court from other than final judgments of Circuit Courts. The Appellate Court may exercise original jurisdiction when necessary to the complete determination of any case on review. The Appellate Court shall have such powers of direct review of administrative action as provided by law. (Source: Illinois Constitution.)