Monetary policy measures such as key interest rate changes are adopted by the decision-making bodies of the European System of Central Banks (ESCB). These bodies are the ECB’s Governing Council, its Executive Board and General Council. The Governing Council of the ECB is the supreme decision-making body of the ESCB; it is made up by the members of the ECB’s Executive Board and the governors of the national central banks (NCBs) of the 17 euro area countries. The Executive Board of the ECB consists of a president, a vice president and a maximum of four other members. The General Council comprises the ECB’s president and vice president as well as the governors of all EU central banks. For more information on the exact responsibilities of these bodies please refer to the section on decision-making bodies on the ECB’s website.