For more information about the Supreme Court, visit the Supreme Court's official website. 2. U.S. Courts of Appeals. The 94 U.S. judicial districts are organized into 12 regional circuits, each of which has a United States court of appeals. A court of appeals hears appeals from the district courts located within its circuit, as well as appeals from decisions of federal administrative agencies.
Some of protein's functions are as follows: 1  Protein is necessary for the building and repair of body tissues. 2  It produces enzymes, hormones, and other substances the body uses.  It regulates body processes, such as water balancing, transporting nutrients, and making muscles contract.
Protein is a vital part of our bodies. The most obvious proteins most of us would recognize are our muscles. Muscle tissue consists of two proteins, actin and myosin, that interact with each other to make muscle a tissue which contracts or shortens. Muscles attached to bone allow us to move.