How many quarts of appeals are in the federal judicial system?

In the federal judicial system, there are 13 Courts of Appeals, also known as Circuit Courts. Each of these circuits hears appeals from federal district courts within its jurisdiction, along with some regulatory agency decisions. The most notable is the U.S. Court of Appeals for the Federal Circuit, which has specialized jurisdiction over certain types of cases. Overall, these courts play a crucial role in the appellate process in the federal system.