Bishops' realms, also known as dioceses, are the areas of responsibility for bishops in the Catholic Church. A diocese is typically made up of several parishes and is headed by a bishop who is responsible for the spiritual and administrative leadership of the diocese. The bishop is appointed by the Pope and is responsible for overseeing the pastoral care of the people in the diocese. The bishop also has the authority to appoint priests and deacons to serve in the parishes within the diocese.