The members of the board shall be appointed for a term of office of three years. The members of the board in office on the date this article takes effect shall, unless sooner removed, continue to serve until their respective terms expire and until their successors have been appointed and have qualified. On or before the first day of July of each year, the governor shall appoint one member to serve for a term of three years commencing on said first day of July; and any member shall be eligible for reappointment. When a vacancy in the membership of the board occurs for any cause other than the expiration of a term, the governor shall appoint a successor as a member of the board to fill the unexpired portion of the term of office of the member whose office has been vacated.
Each member of the board, excluding lay members, shall take, in addition to the oath of office provided for in article IV, section 5 of the constitution of this state, an oath that he has been engaged in the practice of his profession in this state for at least five years immediately preceding his appointment.