Except as otherwise provided herein, a regional housing authority and the commissioners thereof shall, within the area of operation of such regional housing authority, have the same functions, rights, powers, duties, privileges, immunities and limitations provided for housing authorities created for cities or counties and the commissioners of such housing authorities, and all the provisions of law applicable to housing authorities created for cities or counties and the commissioners of such authorities shall be applicable to regional housing authorities and the commissioners thereof. For such purposes, the term "mayor" or "governing body" as used in the Housing Authorities Law shall be construed as meaning "board of supervisors," unless a different meaning clearly appears from the context. A regional housing authority shall have power to select any appropriate corporate name.